Bicristian presents an intense, taboo tale of siblings Michelle and her brother, their religious upbringing clashing with burgeoning desires. Boredom leads to masturbation, and a chance encounter in the bathroom sets their hearts racing. Michelle's wet, self-indulgent fingers and her brother's thick, straight cock fuel their fantasies. They tease each other, their bodies aching for release, until an untimely interruption forces them to halt their passionate exploration.