Detective Conan: Dimensional Sniper will deal with a “sniping incident from an impossible distant by a mysterious sniper.” The story begins from the 635-meter-tall Belltree Tower overlooking Tokyo. Right in front of Conan and the others, who are participating in the building`s opening ceremony, a bullet is shot through the glass, killing a man. Conan, Sera, the police, and the FBI work together and begin searching for clues, discovering that the mysterious marksman is a member of the Navy Seals. Meanwhile, a mysterious college student named Subiru Okiya appears.