Hideo Morita has come forth to the agency asking Kogoro to find his late wife Mrs. Morita’s watch which he has lost in his house. Kogoro refuses the problem, but the Detective Boys and Dr. Agasa offer to help.

Kogoro is tranquilized, and Conan reveals the culprit.

Nigaki’s corpse is left to preserve evidence. Kogoro takes Nigaki’s recorder and camera to find leads but only discovers two completely black photos and one stained with blood. Apparently the murder takes place before the snowstorm but Conan feels like there’s a trick to it.

Sonoko invites Ran, bringing along Conan and Kogoro, to come to a house in the hills where their chocolates are blessed with good fortune for love.

Conan explains that Reiko is taking advantage of Eri’s history with Kogoro by using him on her side. Kameda confesses to changing the time on Kogoro’s phone, thus destroying Shinji’s alibi.

Eri Kisaki is the attorney for a man named Shinji Usami who is convicted for the murder of Tsuyoshi Hirasawa while in a drunken state. On the prosecution side is her rival, Reiko Kujo, dubbed “The Madonna of Prosecutors. During the hearing, Reiko calls Kogoro to the witness stand, leaving Eri baffled and Conan concerned.

Heiji invites Conan to his kendo tournament.

During the informal investigation, Conan discovers that the footprints of the armor in the snow were used to cover up the culprit’s footprints, and finds that the locked room the son died in was set up.

Conan, Kogoro, and Ran are driving to a hot spring when the road gets closed due to snow, and so they accept an offer of staying the night at a nearby house. The next day they discover the body of the company president dead and when they follow the footprints, they find his eldest son […]

Conan, Kogoro, and Ran go to a restaurant that is shaking because of construction next door. They go back the next day only to find that the man running the restaurant is dead. At first it looks like the construction made a vase fall over and hit him on the head, killing the owner, however, […]