Part 2 of Mi ex picks up where it left off, delving deeper into the twisted, taboo world of these Juarez sisters. Their shared secret, a forbidden masturbation ritual, becomes a daily occurrence, each sister pushing the boundaries of their sisterly bond. The older sister, a dominatrix at heart, begins to guide her younger sibling through the world of pleasure, teaching her how to touch herself, how to make herself come. The younger sister, eager to learn, becomes a willing student, her body responding to her sister's touch in ways she never thought possible. But as their bond deepens, so does the danger, as they risk exposure and the judgment of their conservative community.