

He-Man and the Masters of the Universe (1983)
S1E36 City Beneath the Sea
He-Man and Man-At-Arms embark on a mission to find out what happened to King Randor's missing food ships. Suddenly caught in a whirlpool, they are transported to the submerged city of Aquatica, now under the control of Merman. The villain has kidnapped Princess Nahmi and is using the Pearl of Power to manipulate the Aquaticans, convincing them that the surface dwellers are responsible for her abduction. As tensions rise into war, can He-Man unite the Aquaticans, reveal the truth, and save Princess Nahmi before Merman unleashes further chaos?