Reyka is a fifteen year old sniper prodigy raised in the Black Organisation. When failing her first mission assassinate Kaitou Kid, she was given the improved APTX by her father to be killed along with Kaito, Heiji, and Saguru who happened to be there after a chain of unexpected events. When they woke up, they were all shrunk. In addition to that, the girl from the Black Organisation has amnesia and no memory of who she is. Under the new aliases of Edogawa Sir (Saguru), Arthur (Kaito) and Doyle (Heiji), they pose as Conan's siblings. Reyka took the name Haibara Rei and posed as Haibara Ai's younger sister. Now, what will these six shrunken geniuses do?