Welcome to picturesque Provence, where the Lady of the Chateau, Seraphine Demargelasse, has opened its elegant doors to her granddaughter Darcy and three friends. Following a wild evening's celebration, Seraphine is found brutally murdered. In the midst of this shocking crime, a sinister Instagram account pops up, exposing snapshots from the friends' intimate moments at the chateau, while threatening to reveal more. As they race to uncover who murdered Seraphine - and is now stalking them - the friends begin to suspect each other. Because the chateau houses many secrets . . . several worth killing for.