Tato and Beto are poor stepbrothers living on a banana plantation in Mexico. Both are talented soccer players, but their dreams lay elsewhere: tone-deaf Tato wants to be a singer, while Beto is content to remain on the plantation. One day, a sports agent sees the two young men playing soccer and offers to take one of them to Mexico City for a chance at sports stardom.

Two longtime friends decide to attempt the Guadalupe Reyes challenge, which consist of drinking everyday from December the 12th (Day of Our Lady of Guadalupe) until January the 6th (Epiphany Day, the Feast of The Three Kings).