A mandrill named Sandy once lost a duel against Dan'l (Burazza) and was driven from the jungle. Now he returns to seek revenge, but in his single-mindedness his scheme to blackmail Dan'l into fighting him spells the possible extinction of all life in the jungle. While Kimba (Leo) tries to attain a peaceful outcome (to the point where he has Dan'l locked up for his own safety), Dan'l himself frantically works on a scheme of his own in order to stop his enemy's plans.