in "plankton's pernicious plot," join spongebob squarepants on an exciting adventure as he last challenges against plankton's latest scheme to hypnotize the jellyfish of bikini bottom! this beloved underwater world is facing a dire crisis as evil genius plankton has unleashed his new invention, the hypno-pod, which transforms innocent jellyfish into his loyal minions. it's up to you and spongebob to