Black Widow joins the Super Hero Squad and shows that she can hold her ground against Abomination, M.O.D.O.K., and Screaming Mimi. Unbeknownst to them, she is really Mystique in disguise sent by Doctor Doom to steal the Infinity Fractals. When Mystique (alongside Abomination, Klaw, M.O.D.O.K., and Toad) nearly gets the Infinity Fractals held at the Vault, the Super Hero Squad get an unlikely assistance from S.H.I.E.L.D. Agent Songbird (who had been undercover as Screaming Mimi all along). 

Enchantress uses a spell in order to make Thor fall in love with her. Instead it backfires causing Ms. Marvel to fall in love with M.O.D.O.K. This causes S.H.I.E.L.D. to have Hawkeye take out Ms. Marvel before M.O.D.O.K. brings her to Doctor Doom's side. At the same time, Executioner plans to defeat Thor in order to get Enchantress to love him. Also, Thor falls in love with Valkyrie.