The Super Mario Galaxy Movie plot
After the events of the previous film, the villain Bowser is being held captive in a tiny form by Mario and his brother Luigi. From his prison, however, he still sings and yearns for Princess Peach, struggling to control his rage. Moreover, Bowser Jr., his maniacal son, is on the warpath. He wants to bring his father back and must face the Plumber brothers to do so. Meanwhile, Princess Rosalina's good life is also threatened.