[b]Synopsis[/b]

The main quest is basically elements of the various KH games, including KH3D, mixed together.

The group are tasked with finding the Seven Princesses of Heart, not just to keep them safe from the Thirteen Seekers of Darkness, but also to use the Princesses' power to restore Ascot, the maker of the Multiverse, to a Human form (he's currently stuck as a Heartless).

To do this, the group, which includes Mai, a PC with a Keyblade that allows her to locate Ascot's 'tomb', went to The Glory of France and Ongoing World War II worlds, where they rescued two of the seven Princesses of Heart.

Now, they're in the third world, Puella Magi Madoka Magica, to rescue Madoka Kaname and her friends from the Incubators, who are working independently from the Seekers of Darkness.

Madoka's the third Princess of Heart, by the way.

Complicating things for this world are the inhabitants of a technologically-advanced Earth (called Chronos in thier timeline), siding with the Incubators and kidnapping some of Madoka's friends.

Or trying to kidnap them, anyway.