Puss stumbles upon the legendary hidden city of San Lorenzo, and soon finds himself forced to protect it from thieves.

Puss is Toby's new BFFAEAE and it's driving Puss crazy, but when Toby is kidnapped by his ninja brothers, Puss realizes how much he misses the big oaf. Unfortunately, the brothers use Toby to steal a powerful gauntlet from the treasure house, which they plan to use for "mad evil, bro."