The Tick wakes up with a full-grown mustache that has its own agenda. The Tick is pleased with the change and adopts a new, hipper attitude, but a group of specialists are tracking the mustache and cause problems at the bachelor party for Dinosaur Neil's upcoming nuptials. The mustache changes hosts and escapes the party, only to meet its destiny.

While on a date with Carmelita, Arthur is kidnapped by the Deertown Aztecs. The Tick teams up with Carmelita to find and rescue Arthur and, in the process, gets a pet capybara named Speak.