Steven Universe is an animated, science fantasy TV show on the Cartoon Network. It premiered in 2013.
Steven Universe is the story of Steven Universe. The Crystal Gems, a group of renegade Gems (a species of aliens which have solid light illusion bodies surrounding their gem core), fight to protect the Earth and the people of Beach City, Steven's hometown, from various threats. Steven, the half-Gem son of the former leader of the Crystal Gems, must learn to control his inherited powers and save the world.