Nobita’s Detective System

A "Detective System" suddenly appears in Nobita's mind, and trouble starts finding him! Shizuka is shrunk to the size of a palm, Gian gets trapped in an endless loop of the same day, and Suneo's identity is stolen by a stranger... Every case bears strange marks of gears and clocks. Behind it all is the "Time Reversal Society," which wrecks the fabric of time and space. They've vowed to kill Nobita, because he's the key figure in a legend who can protect the space-time continuum!

Armed with a magnifying glass and a time machine supplied by the System, Nobita puts on his detective outfit and teams up with Doraemon and his friends to take on each case. Gian punches his way through obstacles, Shizuka is remarkably sharp at finding clues, and Dekisugi solves scientific puzzles. But the deeper they investigate, the more alarming things become: the System is actually a trap laid by the Time Reversal Society, and even the organization's leader has a mad plan tied to a promise Nobita failed to keep when he was a child!

From a coward who used to run away at the first sign of trouble to a detective who dares to stand up to conspiracies against time and space, Nobita finally realizes that solving cases isn't about gadgets. It's about the courage that comes from knowing your friends will stand by you to the end. As a rift in time and space explodes before his eyes, this adventure spanning past and future must be brought to an end with the conviction to protect everyday life. And a new case is already knocking at the door!