The story is caused by a car accident. The female protagonist is kind, but the second female protagonist pretends to take the credit, and suffers misunderstanding and unpleasant words from the male protagonist. The heroine's amnesia adds new variables to the story, and the appearance of the second male protagonist and the plot of using the heroine to take revenge on the male protagonist make the story even more confusing. In the end, the heroine regains her memory, resolves misunderstandings, and finds her own happiness.