The guys are unhappy when an executive gives them a fifth band member: a troublemaker who thrives on causing conflict and promoting his own bad-boy image.

The guys all fall for the same girl, and this affects the love song Gustavo wants them to record. Instead of singing a sugary ballad, they produce a bitter antilove anthem.

The guys house-sit for Gustavo and wind up wrecking his most prized possessions.