Flash confronts Heat Wave on the sea floor—and in doing so has a breakthrough about how he can help the most people with his Flashes of Insight! After consulting with Mr. Terrific, Wally begins using the Speed Force—in combination with lightspeed passes throughout the city—to gather more data than he’s ever done and begins using it to help people before they get hurt! And best of all: It works. Even peeking just a second into the future lets the Flash give Central City its first day where nothing goes wrong, and not a single accident occurs—and not even an attempted bank robbery by one of his Rogues can stop that! All that’s left now is to scale it up…to a level the world has never seen!