

Iris donates her heart to a tycoon in exchange for $5 billion to help her bankrupt boyfriend Adrian rebuild his empire, surviving on an artificial heart. To spare him guilt, she pretends to be a gold-digger and leaves him, secretly raising their daughter alone. Eight years later, Adrian has reclaimed his fortune while Iris, facing heart failure with only three months to live, reunites with him. He torments her out of resentment, unaware of her sacrifice. His scheming fiancée Karen frames Iris and impersonates the "heart donor." As Iris exposes Karen's lies and the truth emerges, will Adrian realize everything in time to save her?

My wife transplanted the donor heart I had waited for two years for to the fake heir, Sean Morgan. The doctor said I only had one week left to live, so I decided to freeze my body. I donated my body to Sean's lab. On the day I signed the donation letter, my daughter threw herself into my arms and said I had finally made up with her uncle. My parents praised me for finally understanding the deep bond and mutual support between brothers. My wife said with relief, "You've finally let go of your grudges and become an understanding person." I smiled gently. "Yes, this time I’ve really learned my lesson. I will return the status of the Morgan family heir to Sean and fulfill your wishes.”

My parents once treated me like a princess, buying me a lavish home, braving the rain to get me cake, and filling albums with my smiles before I turned five.After my sister was born, I lowered the air conditioner by just one degree to keep her cool, only for my mother to slap me and lock me in the refrigerator, saying, "Stay in there until you've learned your lesson." They forgot to unlock the lock, but at five years old, I couldn't escape, just as I couldn't escape being forgotten. It was our neighbor who broke down the door to save me. My parents thought I had died, and when they saw me return, they broke down in tears, begging for forgiveness.

Rayna risked her life to be pregnant for her husband Kyle, yet was betrayed by him before her sickbed. Her life was in danger due to Chelsea, Kyle's lover, who wrongly applied anesthetics. Then Kyle gave up saving Rayna's life and shirked responsibility. But Rayna's first love Jeffrey came to save her and revealed Kyle's true color who was later banned in the medical field. After recovery, Rayna married Jeffrey.

Ruby Joyce accidentally crosses paths with the cold Mason Steele. After one night of passion, she vanishes without a trace. Ten months later, a baby is delivered to Mason. Years later, while raising his son, he hires a girl named Bella Joyce—unaware she is the daughter he shares with Ruby. It turns out that six years ago, illness stole Ruby's chance to reunite with him.Though bound by blood, their family's reunion is painfully hard-won.

My fiancé, Keith Odell is a hot air balloon pilot. His first love, Michelle Lavigne, insisted on taking a risk and flying to a thousand meters above ground when the balloon’s helium began to leak. In that moment of crisis, Keith grabbed the tandem parachute and leaped with her. With tears in my eyes, I begged him, “I'm pregnant with your child. Can’t you take me first?” But he reproached me. “Is this really the time to fake your pregnancy because of a bit of jealousy? You learned how to skydive but Chelle is afraid of heights. We’ll wait for you on the ground.” Then he forcibly shook off my hand and parachuted down with his first love. He failed to notice the hole in the only parachute he left me. Michelle had deliberately done it. Carrying our unborn child, I closed my eyes and leaped.

Willa Grant, a wealthy heiress, is hit by a car three days before her wedding and left paralyzed for life. What she never expects is that her fiance, Ethan Shaw, has betrayed her again and again. To make his illegitimate daughter Yara acceptable to Willa, Ethan deliberately delays Willa's surgery and secretly has her uterus removed. Heartbroken, Willa wakes to the truth. She pretends not to know anything, and while Ethan lets his guard down, she secretly contacts her best friend Sophie and leaves the country for surgery. Afterward, Willa personally witnesses Ethan meeting Jenna at the orphanage, Jenna coming to the Shaw residence to provoke her, Jenna framing her with a staged fall, and Ethan and his family insulting her without mercy. With her heart completely dead, Willa fakes her death in a plane crash and disappears overseas. When Ethan hears the news at the wedding, he breaks down. When they meet again, Ethan can only hide outside her hospital room and watch her rehabilitation from a distance. Crushed by guilt, he decides to let Willa live the rest of her life without him.

Seraphina once believed she was the vampire prince Alistair's one true love. Five years ago, he rescued her and declared her his soulmate. But when she was attacked by werewolves while pregnant, he sent all the healers to her stepsister Isabella, who had forged a "life bond" with him, causing her to miscarry. Over five years, he favored Isabella—stealing Seraphina's paintings, giving her the studio key, and planting flowers that Seraphina was allergic to. After the truth came out, she faked her death and escaped under the alias Phoebe Miller. She later became an art restorer, was discovered by gallery owner Julian, and rebuilt her life independently. Isabella died in prison, and Alistair, consumed by regret, became an arbiter. A year later, her Light and Shadow series succeeded, and holding Julian's hand, she finally found a peaceful life.

Seraphina once believed she was the vampire prince Alistair's one true love. Five years ago, he rescued her and declared her his soulmate. But when she was attacked by werewolves while pregnant, he sent all the healers to her stepsister Isabella, who had forged a "life bond" with him, causing her to miscarry. Over five years, he favored Isabella—stealing Seraphina's paintings, giving her the studio key, and planting flowers that Seraphina was allergic to. After the truth came out, she faked her death and escaped under the alias Phoebe Miller. She later became an art restorer, was discovered by gallery owner Julian, and rebuilt her life independently. Isabella died in prison, and Alistair, consumed by regret, became an arbiter. A year later, her Light and Shadow series succeeded, and holding Julian's hand, she finally found a peaceful life.

One piece of candy handed to them by a beggar changes everything — in that moment, two friends, Luna (female) and Hanbyeol (male), suddenly switch souls and find themselves falling in love with the same person at the same time. The once-perfect relationship between Luna, Hanbyeol, and Woojoo begins to crack as their emotions collide and drift apart. Is it a cruel joke from God, or a divine gift? Does love follow the body, or the heart? As long-hidden truths and desires come to light, their relationships become increasingly twisted. Only by living someone else’s life do they finally discover who they truly are — and what true love really means.