The explosion of a new Tokyo Subway line leads Conan and his friends in a snow-clad village. Here, after eight years, the little detective sheds light on the dynamics behind the shocking event that caused the death of a woman and the coma of a 15-year-old boy. Under the beautiful snow, Conan gets involved in something bigger than him.
A terrorist group invades a laboratory containing a deadly bacteria and destroys the lab with an explosion. They later announce via the internet they have gained possession of the bacteria and declare themselves to be the Red Siamese Cats, a terrorist group that was eradicated a decade ago.
Chihaya Ayase has spent most of her life supporting her sister’s model career. When she meets a boy named Arata Wataya, he thinks Chihaya has potential to become a great karuta player. As Chihaya dreams of becoming Japan's best karuta player, she is soon separated from her karuta playing friends. Now in high school, Chihaya still plays karuta in the hope that she will one day meet her friends again.
