The Wall of Mexico

A handyman, Don, takes a job at the ranch of a wealthy family who are building a wall to protect their well water, rumored to have youth-preserving properties. He becomes a pawn in the games of the family's seductive daughters, leading to a sexual encounter that leaves him humiliated. As tensions with the townspeople escalate, Don's frustration culminates in him poisoning the well, destroying the myth and resource at the center of the conflict.