A young man from the 1980s, Marty McPherson unexpectedly traveled through time and space to 1955.He accidentally disrupted the fate of his parents' first encounter, and what is even more ridiculous is that he became the object of his mother's favorite.In order to correct the misalignment of history, Marty must skillfully promote her parents to rekindle their love and find her way back to 1985 with the help of the quirky but genius inventor Dr. Brown. In this time journey full of laughter and tension, Marty not only faced the many challenges that changed the past, but also re-understood the meaning of family affection, love and self-growth in the interaction with her parents in her youth.