On St. Patrick's Day, Mira Monroe, Ryan Keely's stepdaughter, decides to celebrate in her own unique way. Dressing up as a naughty leprechaun, she teases her stepdad, Ryan Keely, until he can't resist her charms. As her stepmom, Rusty Nails, is away, Mira leads Ryan to her bedroom, where she strips and reveals her green, lucky panties. Ryan, unable to control his desire, gives in to Mira's advances, leading to a taboo encounter that could have ended his marriage.