表面看来，梁嵩（王力宏 饰）是一个沉默寡言的内向男子，然而实际上，他的真实身份是一名效力于黑帮的冷酷杀手。每次执行完任务之后，梁嵩都会前往日本过一阵子轻松惬意的生活，在那里，他结识了名为雪子（铃木京香 饰）的女子。梁嵩对美丽善良的雪子充满了好感，他不仅主动接近雪子，还邀请她到家中吃饭。渐渐地，雪子对梁嵩的态度也从戒备转向了依赖。

Lian Son is a Taiwanese assassin hiding in Okinawa. Yukiko works at a lunch box shop, but she has a painful past. Saya works at a public swimming pool, but is bored with her life. The solitary lives of these three people slowly intersect with each other under the bright sunshine of Okinawa.