At some point between The Empire Strikes Back and Return of the Jedi, the bounty hunter Boba Fett has a very bad day. When he loses his bounty, the carbonite-encased Han Solo, a mercenary war erupts throughout the galaxy in the most epic event Marvel Star Wars comics have yet attempted.
Source: io9 – A New Star Wars Comic Sees Boba Fett Battle Over Han Solo’s Frozen Body