Blasted back into space by the Stranger, Thor hurtles across the solar system, trying to overtake Ego and deter him from reaching his final destination: the museum of Taneleer Tivan—The Collector. What business would Ego have at the museum?

Worlds collide as living planets Ego and Alter-Ego tear into each other with Earth as collateral damage! Can the god of thunder halt the global-scale mayhem before all three planets are atomized or is one world destined for destruction?