Marlene arrives in Berlin to begin a new life. She meets her upstairs neighbour Flo, seemingly a nice guy and starts a new job as a restorer. She finds new friends while simultaneously being drawn back into her past. But when Marlene finally realises how dangerous Flo really is, she is already wrapped up inside a game of life and death.
At the center of the family story is 13-year-old titular protagonist Madison, for whom cycle racing means just everything! She gives her all to emulate her cool and successful cycle-pro father. But when the talented and ambitious young racer has to unwillingly swap saddles for a mountain bike, things go haywire.
