Lola is excited when abuelita and Lola's cousin Luis come to visit from Guatemala. The fun doubles when Lola and Luis discover that they both have a wiggly tooth! Lola is looking forward to a treat from the Tooth Fairy, but Luis is worried. How will el Ratón--the Guatemalan mouse who brings money for lost teeth--find him in Texas? Lola and Luis brainstorm solutions to this problem, but el Ratón may have a surprise in store for them both!