A young boy takes his mother's place in a group of gemstone-based beings, and must learn to control his powers.
Two years after the events of "Change Your Mind", Steven (now 16 years old) and his friends are ready to enjoy the rest of their lives peacefully. However, all of that changes when a new sinister Gem arrives, armed with a giant drill that saps the life force of all living things on Earth. In their biggest challenge ever, the Crystal Gems must work together to save all organic life on Earth within 48 hours.
After saving the universe, Steven is still at it, tying up every loose end. As he runs out of other people's problems to solve, he'll finally have to face his own.