Kevin is rejected by a butterfly and tries to dig a tunnel to hell, but he unearths a talking skull who wants to hang out. Tanya and Ernesto clash with the butterflies, and Kevin fails to invite his friends to laser tag.

The friends run into an old acquaintance who’s achievements inspire Ernesto to rethink his entire life and exercise routine. But his efforts are derailed by unforeseen events, improbable accidents, and poor bicycle safety.

Kevin seeks a peaceful lifestyle after befriending a pair of tranquil manatees. Worried that their friend is drifting away, Ernesto and Tanya try to foster a calming environment at the apartment, but Turt has summoned dark forces there.