Jimmy Kudo, the son of a world-renowned mystery writer, is a high school detective who has cracked the most baffling of cases. One day while on a date with his childhood friend Rachel Moore, Jimmy observes a pair of men in black involved in some shady business. The men capture Jimmy and give him a poisonous substance to rub out their witness. But instead of killing him, it turns him into a little kid! Jimmy takes on the pseudonym Conan Edogawa and continues to solve all the difficult cases that come his way. All the while, he's looking for the men in black and the mysterious organization they're with in order to find a cure for his miniature malady.

A blind woman hires Richard Moore to find the scarred man who once saved her life. Can Conan figure out which of her visitors is the hero...and which one is a serial killer on the lam?

Then the dashing jewel thief known as the Kaito Kid vows to crack a safe built by a legendary master of traps. But when Conan sees the Kid's message, he suspects he may be dealing with an impostor!