When Squirrel Girl takes Nancy to visit her parents in Canada, what could possibly go wrong? If you guessed "nothing," guess again! Things get real crazy real quick, resulting in the team-up you've been waiting for: Squirrel Girl and Ant-Man! Back at Empire State University, life returns to its regular routine - until a fistfight breaks out! A big one! And Doreen scores a new Flying Squirrel suit that would render her even more unbeatable, if such a thing were scientifically possible! But will it only make her more desirable to a new villain who wants to mold her into the perfect minion? Plus: As Squirrel Girl heads to the Negative Zone, Koi Boi, Chipmunk Hunk and Brain Drain must keep the city safe! What could go wrong? Collecting UNBEATABLE SQUIRREL GIRL (2015B) #12-21.Rated T