Eun-hee is an actress whose acting is poor, but she also plays in her real life. Her performance full of lies helps her feel she creates different personalities each time she dates separate men. Eventually a pack of her lies is tangled up and everything is about to be messed up. Ryohei, a Japanese writer, visits Seoul for his book launch party. He often writes a story pushing characters into a corner and then makes it be a tragedy. He meets Eun-hee by chance, who is in a trouble, just like in his novels.
《Sea of Trees》的故事发生在日本富士山脚下的一片森林,这片森林阴暗诡异,任何人如果进入都难逃一死。因此,这片森林成为了自杀者的圣地。马修麦康纳饰演的角色,一名美国人,走进了森林想要结束自己的生命。在路上,他意外地遇到了一位对死亡犹豫不决的日本人(渡边谦),他正要走出森林。两个命途迥异的人于是踏上了一条相同的路。