the original
A really unfashionable working class girl Chen Xin Yi has the desire to tie down her handsome boyfriend to be with her. Due to certain reasons, her boyfriend gets her to go on a love cruise and she started to ponder on how to lose her virginity and tie down her boyfriend. Xin Yi ended up taking cold medicine which made her drowsy and went into Ji Cun Xi's room. Cun Xi is the sole male heir to his family's company and has been in love with his girlfriend, Anna, for a long time. He planned to propose to Anna on the boat but she didn't turn up on the cruise. An island owner added drugs into Cun Xi's drink and Cun Xi became disorientated and returned to his own room. Xin Yi and Cun Xi end up having a one night stand. Xin Yi later finds out that she's pregnant and Cun Xi's grandmother forces them to get married. Will a couple forced to marry for the sake of their unborn child find love with each other?

Pawut is the successor of a large company. Wanida is a secretary in a law firm. They both go on the same cruise, with Pawut planning to propose to Kaekai, his girlfriend, and Wanida planning on losing her virginity to her boyfriend. However, Wanida ended up taking cold medicine which made her drowsy and accidentally went to Pawut's hotel room, while he was drugged. They spent the night together. Three months later, Wanida finds out that she is pregnant.

another remake of the original fated to love you from Taiwan
This drama is the story of an ordinary girl, Mi Yeong, who has neither outstanding looks, a prestigious college degree, nor any other charming qualities, facing her whole life abruptly changing when love comes knocking at her door. While on vacation, she accidentally happens to spend one night with an unknown rich man and even gets pregnant from that night. Because of this incident, her life will never be the same, and this fateful encounter brings love that transforms this not-so-special girl to an attractive, charming lady.