A young poker player at the top of his game joins a team led by the legendary poker player One-Eyed Jack. While successfully working on a plan to win a huge jackpot, a single mistake puts the entire team in a life-or-death situation.

Jeong-sun as her name lives an uncluttered life with modest behavior even though working at a food factory. Young-soo, a factory colleague, approaches her. As they get closer, they enjoy their secret relationship, and he takes candid shots in beds with his mobile camera. One day, she gets inappropriate stares from others.

Skill, beauty, personality, ‘Diving Diva’ Lee-young has it all. Not being able to be with her best friend Su-jin is the only thing that gets in her way. Just so she can help Su-jin out, she changes her event to synchronizing swimming. While pouring everything to Olympics selection practice, Su-jin and Lee-young are involved in a freak accident. Su-jin disappears without a trace, while Lee-young survives but loses her memory. Lee-young’s memory slowly comes back to her but remembers strange side of Su-jin. Her iron will begins to shake on the diving board.

At 24, Hae-jin is caring for her mother, Jung-woon, who is in a coma—and finds herself wanting to run away dozens of times a day. One day, an aunt she has never met, Jung-hye, suddenly appears, holding an old childhood photo of Hae-jin. But Hae-jin remains wary of her. After moving her mother into a nursing facility, Hae-jin lives with a growing sense of guilt. Then, while cleaning out her mother's house one day, she finds the very same photo her aunt had shown her. That discovery leads her to the past Jung-woon once ran away from—and toward a new beginning of her own.