The Space Mummy has poisoned the water supply so anyone who drinks it is turned into a mummy. Space Mummy and Gargoyle are hiding out in a convent dressed at nuns. Agent U5 is captured and Jerry dresses as a nun to save her. Marie storms the convent with guns blazing to save them. Giant Robot must fight the Starker, a monster that can change size at will. How come Johnny doesn't get to dress up like a nun?
—empathy44