"Two truths and one lie." At the Nightingale summer camp, the girls played this game every day. Emma, the youngest, looked with delight at her neighbors, with whom she shared a small wooden cottage.But one early morning, Natalie, Allison and Vivian quietly left the cottage, never to return. Hundreds of people have searched for them, but without success.Now, fifteen years later, Emma has become a promising artist. She paints large-scale canvases, where dark leaves and knotty branches are woven into gloomy patterns. But only Emma knows what her paintings are really about: on each of them, under the branches and foliage, three white figures are hidden - three girls who have disappeared forever.Emma cannot forget about the past, but she also remembers the past about her: suddenly she is invited to the same camp - now as a teacher of painting. Fearing and at the same time hoping to reveal old secrets, Emma accepts the invitation.Will she be able to solve the mystery that was beyond the power of the police? What does she learn about the disappearance of the girls and about herself?