In the spirit of Cinco de Mayo, a group of straight-identifying men find themselves in a compromising situation. Dressed in provocative panties, they hop onto a seemingly ordinary bus, only to be greeted by a horny group of gay men. The air is thick with sexual tension as the gay men, fueled by the holiday's liberating energy, begin to proposition the lads. The initial shock gives way to curiosity, and soon, the bus is filled with the sounds of passionate, public gay sex, the lads' earlier inhibitions replaced by a hunger for taboo pleasure.