Aubrey Plaza and Alison Brie are sisters of controversy in The Little Hours red-band trailer

The eightscore young blondes and brunettes of Monty Python And The Holy Grail’s Castle Anthrax have some serious competition in the red-band trailer for The Little Hours, the “unapologetically raunchy” medieval comedy that debuted at this year’s Sundance Film Festival. Alison Brie, Aubrey Plaza, and Kate Micucci star as sisters Alessandra, Fernanda, and Ginevra, three foul-mouthed nuns who wile away their days rolling their eyes in confession, hurling obscenities at the peasant who works at their convent, and fighting amongst themselves. That is, until the arrival of handsome new day laborer Masseto (Dave Franco), whose presence makes the convent explode into what the official description calls “a whirlwind of pansexual horniness, substance abuse, and wicked revelry.”

Based on a bawdy tale from the 14-century Italian collection The Decameron, The Little Hours has already been condemned by the Catholic League as “pure trash,” giving heathens yet another reason to see it in theaters on June 30.