Bounty Hunter from Mars

Durango Loco-y-Peligroso, yes, that's his real name, didn't realize when he was asked by an old friend as a favor to snatch a memory chip from a security-wise, impenetrable, high rise building complex that the fates of two planets and the future of the 100 Worlds of the League of Planets and its alien allies would be, literally, thrust onto the palm of his hand.