Recap / Avengers Assemble S 1 E 4 The Serpent Of Doom

Thor faces a troll who possesses an ancient Asgardian weapon, a sign that he is destined to meet his end against a monstrous serpent. The Avengers attempt to change Thor's fate, but proves difficult when he insists on fulfilling his mission. That, and Dr. Doom arrives to take the weapon for his own goal.