Marcos feels alienated from his ex-wife, from his daughter, from society; everything feels flat and fake to him. When he begins to receive letters at his new address from an anonymous troubled woman who signs off as A. and who clearly believes she is writing to the former tenant, her ex-lover, Marcos falls under the spell of the manic, hypnotic missives. The letters become a kind of exorcism as both A.'s epistolary affair and Marcos' personal life reach a crisis point. Possessed by A., he is driven to discover her true identity.