Having thwarted Bowser's previous plot to marry Princess Peach, Mario and Luigi now face a fresh threat in Bowser Jr., who is determined to liberate his father from captivity and restore the family legacy. Alongside companions new and old, the brothers travel across the stars to stop the young heir's crusade.

At the end of summer, Clémence tells her ex-husband that she’s had relationships with women. Her life is turned upside down when he files to strip her of their son’s custody. Then begins a struggle of several years for Clémence to defend her right to be a mother and a woman – free to make her own choices.