Yi-Ming, whose husband works outside of town, lives alone with her son. After years apart, she reconnects with Ting-Ting at a wedding, a girl she was intimate with back in high school. The encounter with Ting-Ting not only sets Yi-Ming free from her oppressive marriage but also reawakens her feelings for Ting-Ting. Now that Taiwan has finally legalized same-sex marriage, will Yi-Ming have the courage to change her life?

林心恬（郭采洁 饰）的爱情路一直不顺，总是不能在对的时间遇到对的人。正当她心灰意冷时，缘份使她邂逅了多情暖男吾川（郑恺 饰），吾川对心恬展开狂热追求，最终心恬被打动。然而意料之外的是，心恬自学生时期就暗恋的学霸男神黄克群（李东学 饰）又出现了。是该选择近在眼前的幸福，还是多年前梦寐以求的白马王子？当心恬做出决定后才发现，原来爱情在冥冥中早已注定！