Thor has returned to this dimension to find that much has changed! A man claiming to be Heimdall has taken hostage the "Balloon Bunch Day Care" and promises not to hurt anyone if he gets an audience with the Mighty Thor! The only way to prove if this man is the guardian of the Rainbow Bridge or not is to take him to Asgard. Apon their arrival Thor learns his identity. In anger and sadness of the fall of his great home and kingdom Thor throws his hammer Mjolnir into the ruins of Asgard only to, not to his realization, free the Destroyer! With this "god killer" on the loose The Avengers must act quickly with the help of their most powerful member (Thor). The Destroyer is almost invincible! The Avengers must fight with all that is in them to defeat this great foe! But will that be enough?