Though WWIII is on the horizon, Okabe attempts to live a normal college life. However, a newly developed AI is about to shake up his world.

While Okabe is left with more questions than answers, Suzuha recruits help in her search for an unexpectedly close person.

Okabe and his friends must battle against fate in the past, present, and future to find Steins Gate and reunite the lab members once and for all.