'Sister Act' this is not.

Alison Brie, Aubrey Plaza and Kate Micucci are just three of the filthiest nuns you'll ever come across in your life in this medieval tale that also stars Dave Franco, John C. Reilly, Molly Shannon, Fred Armisen, Nick Offerman, Jemima Kirke and a whole load of comedy actors that are here to make you never look at nuns the same way again.

Here's the official synopsis:

Medieval nuns Alessandra (Alison Brie), Fernanda (Aubrey Plaza), and Ginevra (Kate Micucci) lead a simple life in their convent. Their days are spent chafing at monastic routine, spying on one another, and berating the estate’s day laborer. After a particularly vicious insult session drives the peasant away, Father Tommasso (John C. Reilly) brings on new hired hand Massetto (Dave Franco), a virile young servant forced into hiding by his angry lord. Introduced to the sisters as a deaf-mute to discourage temptation, Massetto struggles to maintain his cover as the repressed nunnery erupts in a whirlwind of pansexual horniness, substance abuse, and wicked revelry.

'The Little Hours' is set for release in the US on June 30th, with an Irish date TBC.