While ma Dana is away for the transfer of a monkey to the zoo from Chicago, but 'stuck' in a luxury hotel (with masseur) in Cleveland, Tony invites Bernie to stay at his home after a knee operation. Megan gives him the royal treatment, notably giving him her bedroom- and violently commandeering poor Mikey's bed. Thus Bernie catches two of Megans's school-friends climbing up to her bedroom window to ask her out for mischief, and coaches Tony to show understanding, soon extended to spoiling the surprised 'good kids'. Next day Bernie bunks with Tony, which goes great, but when his girlfriend Kim invites herself Tony feels neglected. After Dana's surprise return, Megan's mischief gets dealt with the zoo-way...