Sinbad Jr. is the teenage son of Sinbad, the famous sailor, and he traveled the world in his single-masted sailboat seeking adventure and wrongs to right, fighting such villains as the Bluto-like, big, black-bearded Blubbo and the mad doctor Rotcoddam ("mad doctor" spelled backwards). Sinbad Jr. gained the strength of 50 men whenever he tightened his magic belt, causing the diamond-shaped buckle to flash like lightning and temporarily transform him into a mighty muscleman. Sinbad Jr.'s first mate was his feisty and funny feathered friend Salty the Parrot.