Best buddies Maria, Joaquin, and Manolo have a lot of fun getting into trouble together in their small Mexican town, until Maria's father decides to send her away to Spain to be educated to be a lady. Joaquin and Manolo, under the tutelage of their grandfather and father (respectively), train as a soldier and a toreador (also respectively) -- except that Manolo really wants to be a musician. Unbeknownst to the kids, however, the underworld deities La Muerte (lovely queen of the remembered dead) and the sinister trickster Xibalba (lord of the grim land of the forgotten dead) have placed a bet as to which boy will wed Maria when the kids grow up.
If you want a movie where the good guys win for the right reasons (with the help of their families) and the man and woman kick tremendous ass together, you should enjoy this. Also, some of the big animated spectacles are amazing.