Fred, Daphne, Velma, Shaggy, and Scooby-Doo go to Mexico to visit Fred's computer pen pal and to celebrate the Day of the Dead festivities, which become less festive when a towering, glowering Chupacabra monster turns up to terrify both tourists and locals. The young snoops smell a conspiracy, and as they chase down clues their search for the truth leads them into sundry Mexican antiquities - ancient tombs and temples - where danger increases exponentially....

Despite his family's baffling generations-old ban on music, Miguel dreams of becoming an accomplished musician like his idol, Ernesto de la Cruz. Desperate to prove his talent, Miguel finds himself in the stunning and colorful Land of the Dead following a mysterious chain of events. Along the way, he meets charming trickster Hector, and together, they set off on an extraordinary journey to unlock the real story behind Miguel's family history.