After two teenage sisters, Mira and Francesca, drown themselves in a neighbourhood quarry, their next-door neighbour Ben receives post-mortem letters from Mira. This letter challenges Ben to track down the hidden, cryptic notes hidden in seven places alluding to where the two secretly touched. As Ben uncovers each note, he starts to unravel the hidden lies and secrets that these girls kept, and just how complicated their bonds with the outside world were.