In a small town near Mexico City, Gabino, a backward junior high school student, falls in love with Maty, his charming schoolmate, who rejects him because he comes on to her so clumsily. Humiliated and led on by his classroom friends, Gabino agrees to punish vain Maty. The consequences take them to the pit guarded by an ancient magic stone he and his father hid there. En un pueblo cercano a la ciudad de México, Gabino, tardío alumno de secundaria, esta enamorado de Maty, su encantadora compañera de escuela que lo rechaza debido a su torpeza para el ligue. Humillado y mal aconsejado por sus compañeros de salón de clase, Gabino acepta castigar a la vanidosa Maty.