Ace, Dapper, and Chill-teenage brothers from the planet Teegarden-are finally on summer break. With school behind them and adulthood just ahead, they borrow their family's spaceship and set off to explore the universe. Midway through their journey, they receive an urgent call from home. Tensions are rising on Teegarden, and their parents advise them to stay away until things stabilize. With no clear destination, the brothers divert their course and end up on Planet Earth. Fascinated by human culture, the Super Pig Bros begin exploring Earth one city at a time, starting with New York City. What begins as a carefree adventure of sightseeing and discovery quickly turns serious when Unison appears-an infamous scientist from Teegarden obsessed with control and uniformity. Unison follows the brothers from city to city, spreading chaos in his attempt to impose order on the galaxy. Each time, the Super Pig Bros step in, protecting the places they visit and stopping the damage before it spreads. Eventually, Unison gains the upper hand, damaging their ship and preventing the brothers from warning anyone back home. Stranded on Earth, the Super Pig Bros must now defend Earth's cities, repair their ship, and find a way to send a message to Teegarden-before Unison's plan grows beyond their control.