After the death of her grandmother Margaret Astor, a famous artist, Bella unexpectedly receives a luxurious apartment in the center of London—one that no one knew existed. It turns out that in 1936 Margaret suddenly and hastily moved out, leaving all her valuable possessions in the apartment, and since then no one has gone into it. Bella dreams of a successful career and a comfortable life, but what if the inheritance is not the fulfillment of a dream? Family secrets may prove to be very ominous. What happened to Margaret Astor more than half a century ago?