Max, a Madagascar cockroach, is as big as a bite-sized candy bar and hisses like a snake when he is mad. Leo and his brother are fascinated. Out of all of the bugs in their mother's bug lab, Max is definitely the best. But now, Max is on the loose in the lab! To make matters worse, there's a party there today. Leo and his brother have to find Max before he makes his mom's party guests scream--or worse.