Once upon a time, three billy goats named Gruff were traveling to the hillside to snack on some green grass — when they suddenly find themselves trapped inside a video game! The good news: the three billy goat brothers become SUPER billy goats! One becomes a Warrior, one becomes a Ninja, and one becomes a Wizard. The bad news: the green field of grass is gone — and in its place is Hillside Castle, a dangerous dungeon filled with creepy—crawlies and fantastical foes! Can the goats make their way through the castle to get their grass — or will the toothsome troll named Final Boss feast on them for his lunch?