山城一个燥热的夏夜，两个天涯沦落人。失意的大学艺术史老师赴与年轻陌生女子的桃色之约，意外被女子的旧时画作迷住，殊不知此时隔墙另有其人在伺机而动… Two bodies were lost in the summer steam. In one of the hostel rooms in the mountain city, a lonely art history professor is suddenly obsessed with a painting by a young girl, not aware of what is waiting for him...