"We only happened to stumble upon the 12th theory, the one that defies even the will of God…"

Okabe Rintaro is a college student and founder of the Future Gadget Laboratory, a club in Akihabara for creating strange inventions.

By chance, they discover that their latest creation has the ability to send messages into the past.

A secret global conspiracy develops behind the scenes, and a chaotic future begins to unfold!