Harold, a hapless but well-meaning janitor at a prestigious art museum, stumbles upon a hidden room containing a priceless artifact that is the key to unlocking a forgotten civilization. With the help of a snarky security guard, a quirky museum curator, and a sassy parrot who speaks fluent Latin, Harold must protect the artifact from a group of eccentric art thieves who are determined to claim it for themselves. Their adventures lead them through a series of comical situations involving mistaken identities, stolen paintings, and a runaway trolley.