The N-Team is playing a shooting game, while Mother Brain, King Hippo, and Eggplant Wizard watch on Metroid. The game ends, and they're about to go back to the Palace, when the Warp Wagon is pulled down to the world of Tetris by a powerful force. Mother Brain sends Hippo and Eggy to Tetris to find the source of that power, so she can get it for herself. It turns out that on Tetris, everything is square- and cubed-shaped. The N-Team is greeted by Mayor Squaresly, who declares today ""Her Royal Roundness Day"". The people of Tetris love holidays! The mayor takes the N-Team to CUBIES, ""home of the best square meal in town"", where they meet Lyle, Lana's clumsy older brother. The two siblings hadn't seen each other for two years. Lyle's been on Tetris all this time, and doesn't even know that his father is missing. He's a Keeper of the Sacred Square (the powerful force that pulled down the Warp Wagon). According to legend, the Square is so powerful that it built the entire world of Tetris. Ly