The romantic tale follows a girl living on a small island shelters and falls in love with a man from no where. The mysteries surrounding them gradually unravel his true identity, the ultimate end of an evolutionary process distinct from human beings.

Yi Yi can't forget her boyfriend until she meets the trainee guardian Fang Mu Ye, whom she ends up living together. The two become a bickering couple, however, a crazy scientist, who's looking for a study object, appears.