Ji-su is finally released from jail and reunites with his stepsister Ji-hyeon. However his father had dark secret that neither of them knew before; both Ji-su and Ji-hyeon are half-siblings.

Watercolor Painting in a Rainy Day 2 (Hangul: 비오는 날 수채화 2; RR: Bioneun nal suchaehwa 2) is a 1993 South Korean film, the sequel of Watercolor Painting in a Rainy Day (1989).

乱伦的故事--智洙与养父的女儿智慧疯狂地爱恋着对方，恋情却遭到养父的极力反对。家庭的压力挡不住炽热的爱情之火，两人瞒着父亲偷偷结为夫妻，并希望能通过时间淡化父亲强硬的态度，得到的认可。然而接下来残酷的现实却让他们同时陷入深深的痛苦当中：从悲痛欲绝的父亲口中得知，两人竟然是亲生兄妹。这对历尽波折的苦命鸳鸯再一次走到人生岔口，究竟他们将要如何抉择，两人又是不是真正的亲兄妹，会不会是父亲为了不让他们走到一起而编织的谎言？