Sisters September and July share an intense bond, speaking in a secret language and keeping the outside world at a distance. After September is suspended from school, their mother brings them to a remote house on the Irish coast—where July begins to resist her sister’s increasingly sadistic control.

Mia Tharia
as July

Pascale Kann
as September

Rakhee Thakrar
as Sheela

Cal O'Driscoll
as John

Niamh Moriarty
as Jennifer

Barry John Kinsella
as Cableman

Shane Connellan
as Man in Bar

Amelia Valentina Pankhania
as Young July

Rachel Benaissa
as Woman in Bathroom

Emmanuel Okoye
as Maths Teacher