The Junior Detective Club accompanied Ayumi to an apartment where she was promised by the owners, to replace her own broken ningy? (traditional Japanese doll), a complete set of 7-tier Hinamatsuri dolls if she could correctly position the dolls. Conan surprised Ai by his knowledge of how the individual dolls were to be arranged, what was supposed to be a girl's hobby. Conan revealed he had been made to help Ran organizing the dolls when he was younger. After the dolls were correctly assembled, a neighbour came by and brought along a professional art connoisseur to verify the genuineness of an Edo era Raijin antique painting scroll hung openly in the apartment. The neighbour wanted persuade the owners to let him buy it to complement the F?jin picture he already acquired. However, as it was an heirloom, the owners refused to sell. The connoisseur was upset at the lack of care in how the antique artwork was treated. Both left shortly, after the neighbour reminded the owners they were having financial difficulties. The children went on an errand to buy wine for the owners to make amazake as a treat for them. When they came back, they ran into the connoisseur who claimed he left his mobile behind. Reaching the apartment, they discovered nobody answered the door which was unlocked, and upon entry, discovered the apartment in a mess and the valuable painting had disappeared.