One day, Blue and Barry are enjoying a quiet afternoon when Pancakes bounds in with a surprise-- she's made a rocket out of balloons! And a whole planet named Balloonia! Blue and Barry agree to take a quick peek at Pancakes' creations, but what's meant to be a fun tour quickly turns into an ordeal as the gang finds themselves trapped by the Balloonians, a species of balloon that's come to life. And if our heroes want to make it home, they'll have to overcome the biggest and meanest Balloonian of all-- BALLOON KONG!

Like all friends, they can make mistakes... but at the end of the day, they always have each other's backs. And tops, and sides, and fronts, too!