Objects and people are mysteriously disappearing. Are they lost? Haven't you seen those clawed hands coming to steal them?

Lucy’s life takes a turn when her mother mysteriously disappears. Forced to leave the countryside, she moves to New York to live with her aunt. One day, Lucy meets Rita Perdido, a woman shrouded in secrets, who invites her to join her retrieval agency. Lucy soon discovers she’s a retriever, able to venture into the "oubliettes" to recover lost things. Convinced her mother was taken by a bogeyman, she sets out to find her.