Teaser: Red Hood is activating the Phase Oscillator in a shadowy warehouse. There, he throws a weapon with a sensor through a portal. Red Hood is exicted that he creates a wormhole to another universe but his excitement is cut short when 4 people in the shadows come out and attack Red Hood. Red Hood manages to stand his ground for a while but he is eventually defeated and his attackers take the Phase Oscillator. Red Hood manages to escape through a trap door. The leader is now happy that he has the Phase Oscillator and activates it. The attackers come out of the shadows and reveal themselves as Owlman, Blue Bowman, Silver Cyclone, and Scarlet Scarab, members of the Injustice Syndicate and evil versions of Batman, Green Arrow, Red Tornado, and Blue Beetle.

Main Plot:Batman hops in his Batmobile after defeating the Riddler and returns to the batcave. Batman notices Red Hood's ace on the floor. Owlman jumps out of the shadows and attacks Batman. The 2 engage in battle. Batamn escapes into the catwalk with Owlman hot on his tail. They keep fighting until Batman cuts the power. Owlman activates his light amplifier goggles and says, that owls see better in the dark than bats. Batman runs up to him with 2 sizzling wires in his hand and shoves them into Owlman's eyes, blinding him and knocks him out. Batman then throws Owlman in a prison cell in the batcave. Batman examines the Phase Oscillator and realizes its purpose. Batman tries to get Owlman to talk but he refuses. Batman then removes Owlman's costume and put it on over his costume. Batman then activates the Phase Oscillator and goes through the portal and finds himself on Earth-Three, more specifically, the Injustice Syndicate HQ. The villains then ask him how his infiltration went. Batman tells them that the targeted earth is too powerful and tells them to go to Plan B: blow up the earth using Silver Cyclone's bomb. The Syndicate need to go rob a nuclear lab to get the Promethium 90, the last ingredient to finish Silver Cyclone's bomb. The 4 then set off to the lab. As they fly overhead, people start to cower in fear. Batman realizes this earth is his worst nightmare, a world without heroes. The 4 villains arrive at the nuclear power plant and Scarlet Scarab begins to start shooting scientists with his laser cannons. Batman tells him to stop wasting time and go.They find the Promethium 90 but Silver Cyclone says they can't damage the container. Batman then decides to go get the container but the 4 get interrupted by Red Hood. Batman tackles the hero and shows him his throwing ace. Red Hood realizes that Batman is from another world. Batman gives him a bat-communication device. Red Hood removes his helmet to insert and warns Batman that he's not pretty to look at with the audience getting a few of a familiar bleached complection. Batman then knocks him out while Scarlet Scarab gets the Promethium 90. The 4 then take Red Hood back to HQ. Batman asks him where they kept Red Hood at and Blue Bowman tells him they imprisoned him with the other heroes. Blue Bowman then asks him if he's ok. Batman then punches him in the face and tells him that if he questions him again, there will be trouble. Blue Bowman walks out of the room and tells someone hidden to keep an eye on Owlman. Silver Cyclone then is seen torturing Red Hood and talks to him, telling him of the time they found Red Hood's HQ and when Owlman throws him into a vat of chemicals. The chemical severly disfigured Red Hood, bending but not breaking his sanity .Then he says that Red Hood assembled a team of heroes to fight the Syndicate. The Syndicate defeats the heroes and captures them. Silver Cyclone is unaware that Batman is monitoring them through the bat-communicator he gave Red Hood. Batman tells Red Hood to stall for time while he tries to find a way to save the heroes. But then, Dyna-Mite, the evil version of The Atom, arrives. Batman knocks him out but damaging the security console while doing it. Batman asks Red Hood for directions. Red Hood manage to give him directions whiel answering Silver Cylcone's questions at the same time. Batman passes Scarlet Scarab in the mess hall where he tells the scarab that he is keeping the brain of a hero in his closet. Red Hood then tells him to get in the exhaust ducts. Silver Cyclone then figures out what Red Hood is doing and knocks Red Hood out. He then fires blasts of wind into the exhaust ducts which forces Batman back into ventilator fans. Batman manages to blow up the fan and make his way to the Syndicate trophy hall. Blue Bowman, Dyna-Mite, and Scarlet Scarab arrive and attack him. Blue Bowman fires an explosive arrow which snags a piece of his cape off. Batman then takes off the Owlman costume and knocks them all out. Batman then frees Red Hood and gives him his helmet. Silver Cyclone arrives with other members of the Syndicate but Batman frees the imprisoned heroes and they engage in battle. During the battle, Red Hood goes after the Phase Oscillator. Batman turns around and almost punches the good version of Gorilla Grodd but stops himself and says sorry that he looks like someone he knows. Red Hood recovers the Phase Oscillator and tosses it to Batman. The heores manage to defeat the Syndicate and lock them up except for Silver Cyclone. Silver Cyclone then activates the bomb and reveals that the bomb only kills organic life such as humans. He says he hates humans and plans to live in an empty planet. Red Hood throws an ace and it lands into Silver Cyclone's head thus destroying him. Batman then puts some mini rocket launchers on the bomb and Red Hood activates the Phase Oscillator and the bomb flys through the portal. Red Hood tells Batman he sent it to the zombie world becuase no one can be killed there. Batman congratulates Red Hood on his victory and then steps through the portal and finds himself in a dark alleyway in Gotham. Batman looks around and finds wanted posters of him. The police then arrive and surround him. to be continued...