井山（林宥嘉 配音）和音（李心洁 配音）是一对情侣，他们的爱像亲人般一样坚定。这天是音的生日，井山和音在花莲山月村仰望着满天星空，谈着彼此的梦想。 两人决定分开两年，完成各自的梦想，井山到北京艺术学院进修绘画，音留在台北为音乐创作而努力并参加比赛。 这样的决定为他们的生命带来什麽难忘的故事…

Shen Wei and Tong Xin wake up one morning in a bed, with no idea what happened or even who the person in bed with them is. The two split with few words, but each is missing something. What is actually happening last night?