In a last-ditch attempt to revive their relationship, writer SU Donginvites his ex-girlfriend ZHAO Ying on one final trip, planning to woo her atthe site of a mythical tree that blooms only once every 100 years. Zhao begrudgingly succumbs to Su’s pestering,but unbeknownst to Su,she has alsoinvited her new fiancé, the older and seemingly dim-witted GU. Growingincreasingly jealous, Su makes Gu his unwilling rival. Between long, arduoushikes and over-the-top romantic gestures, Zhaoremains unimpressed. However, an uncanny friendship forms betweenthe two romantic rivals, until the trip takes a sinister turn that eerily mimicsthe plot of Su’s latest novel.