S1, E20: The Yeerk’s plan is revealed when Principal Chapman stops the game and announces that there is a tornado warning in town and everyone must retreat to the basement shelter for safety. The Animorphs know that there is nothing safe about this shelter - it’s the Yeerk pool and the plan must be to infest everyone at the game. But with new secret powers from the disk, the Animorphs enter the Yeerk pool and the battle begins... but we won’t know how it ends until next season!