A woman and her bridegroom are found murdered in their bed the day after their wedding. It had snowed overnight and the killer left no tracks. It is up to an amateur detective to figure out what happened. Carefully and systematically, he pieces together the clues in this locked room mystery.
Hong Kong student Ben Lee becomes friends with his mainland Chinese classmate Chang Chih while studying abroad in Japan. Ben is unmotivated to study and only cares about money and on the other hand, whenever Chih encounters a Chinese person, he would ask whereabouts of his childhood sweetheart. Ming is also from Hong Kong and in order to elevate his social status, he becomes involved with a bar hostess and owner Yuriko, hoping to become Yakuza leader Yamada Ishikawa's brother in-law.
When an American is murdered in a Japanese inn, Tokyo police detective Munesue follows the trail of the killer to New York. There he is joined by a New York City detective named Shuftan and together they sort out the crime.
