Rebecca Zamolo has managed to foil the Game Master's plans before, but this time the Game Master has snake-napped Nacho, her good friend Miguel's pet. No way is Becca going to let the Game Master get away with this dastardly plan. But when the clues lead Becca and her new friends in the direction of the one house in their entire neighborhood that none of them ever want to go near, they know they have no choice but to screw up their courage and dare to investigate, if they want to rescue Nacho.