Flashpoint World of Flashpoint Superman

"Don't miss this Superman volume collecting WORLD OF FLASHPOINT #1-3, BOOSTER GOLD #44-47, THE CANTERBURY CRICKET #1 and PROJECT SUPERMAN #1-3. Not a dream, not an imaginary story, not an elseworld. This is Flash Fact: When Barry Allen wakes at his desk, he discovers the world has changed. Family is alive, loved ones are strangers, and close friends are different, gone or worse. It's a world on the brink of a cataclysmic war - but where are Earth's Greatest Heroes to stop it?"