Mario and co. are ready for a relaxing vacation with Peach's royal friends in Equestria. Little do they know that something so innocent will inevitable lead to their next big adventure.
All Mickey had ever known was his own home. And for years, peace and prosperity had reigned. However, unknown to him, there is another magical kingdom in need of a hero.
When a Portal is discovered on the edge of the everfree forest, some ponies go to investigate. When they get there, they are sucked into the Portal which leads to a new world altogether- and the ponies are no longer ponies. They're warrior cats.