Mirror Master ambushes Wally at Linda Park's home. He's trapped her in a mirror dimension and if the Flash doesn't do something about it in the next fifteen minutes, she'll be stuck there forever.
Unfortunately for Wally, Mirror Master's illusions are enough to fool him into running through a prism at the speed of light. This splits the Flash into seven different colored versions. By the time the Flash can escape Mirror Master's trap, McCulloch has already robbed the Keystone National Bank.
Mirror Master continues to hold off the Flash with illusions and mirror duplicates but the Flash manages to break McCulloch's gun...without which Linda will be trapped forever. Mirror Master sends the Flash to Singapore to pick up replacement parts and then he frees Linda with one minute to spare...or so he says. Wally is given the choice to catch the crook or make sure his girlfriend is alright.
Flash chooses to check on Linda but after finding her to be okay, he runs back and catches the Mirror Master. McCulloch laughs, knowing he can escape his cell no problem...until the Flash turns out the lights.