A Wholly Average Issue
The Plunderer and his men rescue Daredevil from Maa-Gor, but once they have him back they recapture Ka-Zar as well and depart the Savage Land for The Plunderer's castle.
The Plunderer then drugs his own men before revealing the secret of Ka-Zar and his own origin.
All-in-all it's a pretty unremarkable issue, with Ka-Zar's origin being only a slight twist (or rip-off) of Tarzan; The Plunderer being a pretty generic adversary; and the artwork a blend of Kirby's layouts and Romita's finishing that comes out as functional, while exemplifying neither (they must've been behind schedule on this title to bring Jack back).