Invincible fights Angstrom Levy in order to save his family...but Angstrom doesn't fight fair! He teleports Invincible to dimension after dimension, in order to weaken Invincible enough so that he Angstrom can beat him. Int the end they get into a massive fist fight while teleporting through different dimensions. Invincible, in a blind rage, hammers on Angstrom for beating his Mother....and uses too much force!
This issue ties in with Marvel Team-Up (2006) #14.