Floriane "Flo" Bohringer has been the host of a feminist morning show for 10 years and is happily in a relationship with her colleague Milan. She has little time for her private life. Her 15-year-old daughter Luna, whose problems she knows little about, commutes between her apartment and that of her ex-husband Jens, one floor above her. Her older son Carlo and Kathi, her ex-husband's new partner, also live there. Flo is committed to a women's shelter, for which she is trying to secure support from a Berlin senator. When Flo comes home one evening, Luna is lying lifeless on her bed. She committed suicide out of lovesickness. Desperate Flo receives a tip from a stranger about the company "Plan B," which enables time travel. She decides to travel back a few days to prevent Luna's death.

Flo wonders whether, despite her career as a busy talk show host, she can still adequately support her daughter Luna. She cautiously tries to do some things differently than in her "first life," which has consequences that surprise her. For example, she receives the blows from Luna's boyfriend Pasqual, which were previously intended for her daughter. At Luna's request, she withdraws the complaint she filed and even invites Pasqual to dinner. She also tries to improve the relationship between Luna and her brother Carlo. But Luna still experiences periods of depression.

When Luna is admitted to a clinic with severe depression, Flo Bohringer embarks on a second journey back in time, one that goes back about six months further than the first. Flo had previously discovered that Luna's loss at a gymnastics competition was the trigger for her becoming estranged from her gymnast friends. So Flo tries to get Luna excited about joining a theater group where the competitive spirit is less present. When Flo wins an award for her radio show, she takes her two children and her ex-husband with her to Hamburg. While she is exchanging intimate details with her ex-husband, the two children go out. However, Carlo loses sight of Luna and calls his parents for help. Flo finds her daughter in a darkroom having violent intimacy with a stranger. Luna collapses when confronted by her accusations.