Patapon: Rise of Cosmos is a fanon game that takes place after Patapon: Dawn of Darkness.
After the Patapons have defeated the Archking, and alas, peace was restored, the last of the generals decided to take vengeance on the Patapons. They have brainwashed Chronum, the Controller of Time, so that he will team up with them.
The Patapons also have another ally. A mysterious Uberheroine, Zara, has fallen form the skies to warn them of their impending predicament. The player controls Zara as the new Uberheroine, but can be leveled up to unlocked new classes.