Kogoro wins a horse race with the price money being 100 times of the original bet, which turns out to be 1 Million Yen. But he admits that it is a ticket he accidentally picked up. Regardless, they go to the neighbourhood sushi restaurant to celebrate. There they meet Wakita who turns out to be proficient in deductive reasoning. He correctly predicts the horse Kogoro bet on just by listening to their conversation. While introducing himself, Wakita says that he is a detective maniac and that he struggles to stay at one place and is constantly moving. He wanted Kogoro to narrate some cases he had solved. It seems that Wakita has a 'bad' eye, much to the suspicion of Conan as an eligible 'Rum' suspect.
Meanwhile, a lady storms into the restaurant shouting that somebody stole her pouch. The pouch is found by the lady on the restaurant bathroom. She says that it was stolen on the train and that the culprit should have an injury to the wrist administered by her as she caught the hand of the thief on the busy train.
Theft
Location:Train
Victim:Suzuyo Hijirisawa
Suspects:Tsunetaka Harashima, Tameshige Munechika, and Natsume Ashino
The thief most likely overhears the conversation and stole the pouch just for the winning ticket which pays a hundred fold.
Wakita seems to be getting competitive with Kogoro, who avoids going any further into the matter as it seems that the ticket he accidentally picked up was originally hers.
Wakita presents his deduction: he says the culprit utilized the ginger juices from the Gari to remove the bloodstains from his clothing and that therefore Tsunetaka Harashima, the customer who ordered a lot of Gari, is the culprit. Tsunetaka protests and empties his pockets, showing that he doesn't carry a betting ticket with him and advises the others to do the same. The pressure is too much for Ran and she reveals that Kogoro has a winning 10,000 Yen betting ticket with him that has a hundredfold payout of 1,000,000 Yen. She hands it over to Suzuyo and apologizes. Suzuyo takes a look at the ticket and says that this is not her ticket, since the one she had was a combination betting ticket worth 5,000 Yen, which has a two hundredfold payout, thus making it worth 1,000,000 Yen as well.
Conan knocks out Kogoro and reveals the true culprit, Tameshige Munechika. He used the daikon radish he ordered, which has the same protease as the ginger from the Gari in it, to remove the bloodstain on his sleeve. The reason he came to the restaurant was that he had to meet with his wife and her parents later, to which he couldn't come with blood on his sleeve, so he had to remove the blood with the daikon from the restaurant before the meeting. His reason for stealing the ticket were his financial problems: he married a woman from a wealthy family and her extravagant life-style and spendings drove him into debt, so he needed to shamefully ask her parents for financial help at their meeting, which is why he gave into the temptation of stealing the ticket, to avoid shaming himself before the parents of his wife. Tameshige than cancels his meeting with his wife and waits for the arrival of the police, who then take him to the station.
Wakita is happy with witnessing a great deduction from the Sleeping Kogoro and wants to become an apprentice of him. In exchange, Wakita offers prize cuts in the restaurant for Kogoro at every visit. Kogoro agrees. Later, Kogoro is convinced by Conan and Ran to give the ticket he accidentally picked up to a police station, since it is the right thing to do.