War threatens to consume Chessworld as the Red King advances against the peaceful White Commonwealth. With the White Prince held captive, Wonderland's rulers debate whether to intervene while the mysterious Cheshire Cat offers an unexpected warning. Meanwhile, Henry finds himself deeper in this strange world, attending the Red Princess's bizarre royal croquet party. When the White Prince and his loyal Knight make a daring escape, their flight brings them crashing into the celebration-and turns the Princess into an unwilling hostage. Forced through a doorway at the edge of reality, the unlikely companions discover an ancient kingdom filled with a dangerous new enemy.