Futurama

The crew visits an arid planet in the Galaxy of Terror distinctive for it's three suns and liquid alien inhabitants. Fry, after delivering a package under the scorching heat, quenches his thirst with a bottle of cool blue liquid. Fry soon finds out he drank the planet's royal leader and is named the new emperor. Fry abuses his newfound power, even appointing Bender second in command, until the aliens retaliate and the real battle for power begins.