

Five years ago, a food delivery rider named Ethan Parker saves Grace Hayes, chairwoman of Apex Group, from an accident. In the charged aftermath, the two grow close, and Grace becomes pregnant, later giving birth to a daughter called Mia. Five years on, Ethan finally works up the courage to find her and take responsibility. He shows up at Apex Group's doors, only to discover that neither of them can remember the other's face. Two strangers, meeting as if for the first time, slowly finding their way back to each other.

Yasin Craig, the heir to the prestigious Craig family and a special forces soldier, survives a plane crash during his final mission, only to be saved by battlefield doctor Xenia Jones. When Yasin regains consciousness, he has no memory of who he is. Meanwhile, Yuna, who stumbles upon the ring symbolizing Yasin's identity, is determined to secure wealth and status. She deceives Yasin's mother and becomes the adopted daughter of the Craig family. Fearing that Xenia might uncover the truth, Yuna starts to aggressively undermine her. Unable to remember his past, Yasin finds himself protecting Xenia—and in the process, unexpectedly regains his memory.

Five-year-old Tina tries to gain weight so she can donate bone marrow to her blind mother Jessica Sullivan, who suffers from leukemia. Misunderstood for her love of fatty food, she only wishes to save her mother's life. Years ago, Jessica lied about cheating and losing their child to leave her blind lover Sanford Hughes, hiding her illness and secretly giving birth to Tina after donating her corneas. Now a powerful CEO, Sanford meets Tina by chance. His mother suspects the girl is his daughter and orders a DNA test. When Jessica briefly regains her sight and sees the man she once loved, the truth finally comes out — Tina is their child!

Grace chooses mahjong over her granddaughter, leaving Coco in the kitchen. Coco manages a brief call to her mother Rita before her smartwatch dies, during which Rita senses something is wrong. Desperate, Rita repeatedly calls her mother-in-law, but the noise of the mahjong table drowns out her calls. She then contacts her husband Leo, only to be dismissed while he is with his first love. By the time Rita finds Coco, the child has succumbed to gas poisoning. Leo refuses to accept the tragedy born of neglect and misplaced loyalty until he sees Coco's portrait at the funeral home.

The little girl, Molly Foster, carried a small basket full of herbs to brew medicine for her mother. But her grandfather scolded her for wandering around outside, asking her not to cause trouble for her father, who was in the army. At that moment, Molly's mother started coughing up blood. Molly asked her grandfather to get a doctor, but he rejected and scolded her again before leaving. As her mother was dying, Molly found the note her father left her 3 years ago and decided to take her mother to the army camp to find him for treatment. They arrived at the camp gate, and Molly believed that she would finally find him to cure her mother.