While the Avengers are the world's mightiest heroes, the Defenders are a motley crew only united in times of crisis. Now these two team clash after being fooled by the trickster Loki and Dormammu into believing themselves to be enemies. Who will prevail when Silver Surfer clashes with The Vision, Namor challenges Captain America and the Hulk battles Thor.

Collects: Avengers #115-118, Defenders #8-11