when does the merger happen in grey's anatomy

Roxanne Hill, the heiress of the Hills and a Muse Award gold prize winner, gave up on her dream for the sake of her husband, settling down as a housewife for five years. She believed she would live a blissful life, but tragedy struck when she lost her unborn child due to her sister-in-law's treachery. To make matters worse, her husband chose to save the sister-in-law instead of rushing Roxanne to the hospital. Their relationship begins to crumble, while the art world eagerly awaits the return of the renowned artist.

Roxanne Hill, the heiress of the Hills and a Muse Award gold prize winner, gave up on her dream for the sake of her husband, settling down as a housewife for five years. She believed she would live a blissful life, but tragedy struck when she lost her unborn child due to her sister-in-law's treachery. To make matters worse, her husband chose to save the sister-in-law instead of rushing Roxanne to the hospital. Their relationship begins to crumble, while the art world eagerly awaits the return of the renowned artist.

Whitney, the heiress of Sherwood Group, thought marrying Tyrone was a journey of love, only to find herself trapped in a hellish nightmare. First, she was unjustly imprisoned, then ruthlessly crippled. Tyrone appeared indifferent to Whitney's suffering, but when a tragic fire claimed her life, his heart inexplicably hollowed. Yet, a month later, a woman bearing an uncanny resemblance to Whitney appeared at a lavish banquet, introducing herself as "Anna." With a smile as radiant as it was deceitful, she cunningly captivated Tyrone, beginning to spin a web of vengeance...

Abigail lies dead in the hospital, while her fiancé Kyle and stepsister Chloe gloat over their murder of her. Overhearing their evil plan, Abigail later comes back to life and immediately marries a broke model named Henry as revenge. Abigail thinks her marriage is all just a play, but when she faces betrayal and difficulties, Henry secretly helps her. However, just as things are getting real between them, she finds out a shocking secret about Henry’s identity...

Legendary diplomat Wanda Jason once left the Ministry of Foreign Affairs for love, only to be rejected by her husband, Marshal Liam Joy, and their son Felix. Resolute, she divorced him and returned to diplomacy under the name Wan,stunning the world once more. When Liam realized his mistake, it was too late. Yasmin Zeal,desperate to marry Liam, exploited her brother's life-saving debt and drove a wedge between Liam and Wanda, until her true identity as a traitor's sister was exposed. Regretfully, Liam went to war and died in battle, leaving a final confession: "My only wish was to grow old with you." Wanda, with her son and adopted daughter,took up a new mission—walking toward a new dawn.

Seven years ago, Grace Taylor accidentally spent a night with Justin Randall, the powerful CEO of Randall Corp, and gave birth to twins. But under her father's orders, one of the babies was stolen at birth.Now, she returns to the country to find her missing child, only to cross paths with Justin once more. Neither recognizes the other at first, but sparks quietly reignite. By chance, Hugo makes friends with a boy who looks just like him—and it turns out he's the lost twin. As the truth unravels,Justin discovers that Grace is the mother of his children. When she tries to leave with the boys, he begs her to stay. In the end, past wounds heal, love finds its way back, and the family is finally made whole.

Frank had been adopted by his foster parents who doted on him dearly. But everything changed the day his foster parents officially recognized Timothy, their biological son. No matter how earnestly Frank explained, his adoptive father chose to believe the newly acknowledged heir over the son he'd raised for over twenty years. Frank had overlooked the bond of blood. On Timothy's birthday celebration, Frank died in a car crash. In his final moments, Frank realized the entire tragedy had been orchestrated by Timothy. Consumed by regret and rage, his world plunged into darkness. When he opened his eyes again, he found himself back to the fateful day, his wife’s leap from the building.

Seven years ago, Grace Taylor accidentally spent a night with Justin Randall, the powerful CEO of Randall Corp, and gave birth to twins. But under her father's orders, one of the babies was stolen at birth.Now, she returns to the country to find her missing child, only to cross paths with Justin once more. Neither recognizes the other at first, but sparks quietly reignite. By chance, Hugo makes friends with a boy who looks just like him—and it turns out he's the lost twin. As the truth unravels,Justin discovers that Grace is the mother of his children. When she tries to leave with the boys, he begs her to stay. In the end, past wounds heal, love finds its way back, and the family is finally made whole.

Sherry Turner was framed by her sister, Eva, and was sent to the reformatory. But actually, Eva wasn't Sherry's real sister. During three years at the reformatory, Sherry was badly tortured, poisoned, and lost her voice. After Sherry came back home, her family still didn't care about her and misunderstood her again and again. Sherry was disappointed and decided to leave home. When she could speak again after surgery, she started to fight Eva back.

Murphy was once a "simp" who misused company funds to support his girlfriend's family, nearly driving the company to bankruptcy. His girlfriend cheated on him with her first love and tried to steal a project, putting Murphy at risk of a $50 million compensation. At this moment, he awakened a system that promised to "Employee Spending Rebate System." With only six remaining employees wanting to resign, Murphy lied about being a wealthy heir and fulfilled their needs. The employees gradually began to believe in him and started working overtime to finish the project. After completion, Murphy not only avoided the $50 million compensation but also hit back at his ex-girlfriend's family. When they sought to reconcile or join the company during their downfall, Murphy rejected and humiliated them. He continued to invest in new employees, and his career began to turn around.

Jana was the ultimate admirer of the school heartthrob Zell for three long years. She brought him breakfast, bought him medicine,and was on call 24/7, 365 days a year. On New Year's Eve, after her 1,081st confession was publicly humiliated, she declared "game over" and walked away. It turned out that she was actually the heir to the Carter Group. Three years ago, to win a bet with her childhood friend Zed, Jana had pretended to be a poor girl to pursue Zell. Three years later, with the bet concluded, Jana reclaimed her identity and left Zell. When Zell learned the truth, he was filled with regret. He teamed up with the malicious Wendy to seek revenge at Jana and Zed's wedding, but their plan backfired and they were utterly defeated!

When the Lynch family finally finds Fred after twenty years apart, they expect a meek puppet they can control. They don't realize he's come back from hell as a man bent on revenge. His adopted brother sees him as a rival, his sisters sneer at him as beneath them, and his parents try to chain him with guilt. He only smiles coldly and lays his plans in secret. "I'll reclaim everything bit by bit, beginning with your valued business empire."

After Johnny married the stunning and accomplished Valerie, his greedy family—convinced he'd landed a wealthy older sugar mama—never bothered to meet her. While Johnny was away, they mistook Valerie for his mistress and, desperate to keep their imagined "rich old bride's" fortune, cruelly turned on her. Little did they know: Valerie was actually the young, brilliant CEO of a major company, temporarily stepping back to focus on starting a family. When the truth came out, their shame was matched only by her fury—and they were swiftly shown the door.

Once cherished as the beloved daughter of the prestigious Chandler family, Claire's life was shattered when she was abducted by a jealous woman named Quintus, who replaced her with her own daughter, Shelly.Raised by Clarence, the master of the Clearheart Temple, Claire grew into a prodigy in the mystical arts.Years later, she was brought back into the Chandler family. Threatened by Claire's return, Shelly conspired with her mother to sabotage her, ultimately leading to Claire's brutal death.But fate had other plans. Reborn through ancient rituals, Claire returned with a burning desire for vengeance.Joining forces with Shawn Jackson, a formidable tycoon with hidden depths,she set out to dismantle the dark sorcery that had controlled her fate. With the support of the Clearheart Temple, Claire revealed the twisted secrets of Shelly and her mother,freeing her biological parents from their evil manipulation.With the darkness behind them, Claire and Shawn embraced the life they were always destined to share.

Kayla Anson, a top OB-GYN, was just hours away from her wedding when everything fell apart. The night before the ceremony, her adopted sister Elise arrived at the hospital with a ruptured ovary. To Kayla's shock, it was her fiancé, Adrian Fane, who brought Elise in.Relying on her experience, Kayla quickly realized the truth. Adrian and Elise had been having an affair. Without hesitation, she ended the engagement. That same night, she reached out to Rowan Keane, the wealthy heir who had loved her for years, and proposed a flash marriage. Rowan gladly accepted.At the wedding the next day, Kayla stood in front of everyone and announced she would not marry Adrian. As the crowd erupted in confusion, Rowan entered with an extravagant bride price. He exposed Adrian and Elise's betrayal, stood up to Kayla's biased parents, and helped her reclaim her pride in the most unforgettable way.

Xandra Quinn has only ever had her grades. So when school heartthrob Robert Miller confesses publicly, she shocks everyone by saying yes. She knows it's a trap set by her jealous rival Amelia Moore, but why refuse? Xandra stops studying, openly wasting time with Robert, while Amelia celebrates her "victory." What she doesn't know—Xandra already has a Harbard offer. On exam day, Amelia mocks her, only to find Xandra revealed as the national top scorer—with a perfect score.

Mark Dalton engaged in charity work and financially supported Carla Fulton, who was in poverty. Carla mistakenly believed that she held a special place in Mark's heart and gradually became arrogant. Five years later, after graduating from university, Carla, in an attempt to show off, lied that Mark was her brother and brought her classmates to intern at his company. Mark, busy with the company's IPO, delegated the task of arranging the internships to his subordinates. The subordinates did not dare to stop her, allowing her to act recklessly within the company. She fired the technical team and declared herself the chairperson. When Mark was negotiating a partnership with Saturn Group, Carla's outrageous behavior caused the deal to fall through, and Mark was so furious that he fainted and was hospitalized. Carla continued her reckless actions, pushing the company to the brink of bankruptcy, and even planned to sell it. After Mark regained consciousness, he exposed her lies. Resentful, Carla teamed up with a rival company to sabotage Mark's projects. In the end, Mark uncovered the conspiracy, Carla was arrested, and the company successfully went public with the support of Saturn Group.

After her family's massacre, Mara Burke assumes the identity of Queenie Dawn and infiltrates the inner circle of her enemy Zack Lowe to seek revenge. She grows suspicious upon discovering her parents' memorial photos and wavers when Zack risks his life to save her.Eventually,she learns Zack is actually an undercover police officer. The two join forces to set traps, using internal gang conflicts to eliminate enemies, ultimately bringing down the gang leader Jackson Mallow and completely dismantling the criminal organization.