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.
Haesu moves to another city and opens a cafe to start her new life. Yejin, a high school girl and frequent customer, starts to work at the cafe and falls for Haesu. Yejin confesses her love to Haesu when she is sure about her feelings.
Seo-Rin trabalha como professora do ensino médio. Sua vida está indo e ela está prestes a se casar em breve. Um dia, ela toma café em sua mesa e adormece. No dia seguinte, ela recebe uma mensagem de texto perguntando "Você teve um bom sonho?" e uma foto está no telefone dela. A foto mostra Seo Rin parcialmente despida. Ela e o ex-detetive Gook Cheol trabalham para descobrir quem é o responsável.
