On the Jambandra space station far away from Kirby’s home planet, a dark crystal heart explodes due to an imperfection in a mysterious ritual, sending its numerous fragments, Jamba Hearts, hurtling into deep space. Many characters, including King Dedede and Meta Knight, are possessed while investigating the hearts that land on Popstar. A heart hits Kirby, but it instead gives him the ability to befriend enemies by throwing hearts. Kirby notices many Waddle Dees bringing food to Castle Dedede and decides to investigate. After Kirby defeats Meta Knight and King Dedede and frees them from the Jamba Heart’s influence, a large fortress known as Jambastion lands on Popstar. After defeating three generals of ice, fire, and electricity, Francisca, Flamberge, and Zan Partizanne, respectively, Kirby and his friends fly to the far reaches of space.