Love Makes Me Flipped. Eventually.

After her parents' divorce, primary schooler Xiao Xiao learns from her father Lao Lv the importance of "faithfulness.” She decides to marry her male classmate, Xiao Zhang, whom she believed to be faithful. A sequence of events follow: being caught by the teacher, shadowing Xiao Zhang and encounter with an eccentric man in the cave… Xiao Zhang finally agrees to go to Xiao Xiao’s house to play, but is accidentally injured by Lao Lv and hospitalized. In the hospital, the two children find the "love" they are searching for.