The Ultimate Strategy of the Red Skull.Thor agrees to fight the Avengers when Red Skull threatens to use Hikaru to do the job in his place. Tony plans to pretend to fight Thor until they can come up with a more effective counterattack, but Thor will not play along. The fighting becomes more intense as Thor states he cannot let Hikaru kill anyone. Realizing that Thor will continue to protect Hikaru at all costs, the other Avengers vow to protect their young partners as well. The kids look on in horror as the fighting only gets worse. The fight proceeds to wreck the base, scaring the HYDRA agents, who learn from Skull that they and the base are no longer needed. Crossbones emphasizes the point by shooting at one HYDRA agent, scaring him off. Skull then puts the Dimension Sphere into the base's computers and leaves his control room. He takes Hikaru to the tank bay where the Avengers are fighting and uses him as leverage to order Thor to kill the other Avengers, while the kids beg their teammates and friends to stop the madness. The Red Skull then suggests to Hikaru that he should use his Build Up Plate. Before he can order the boy to do that, however, Crossbones shoots Red Skull in the back. Injured, Red Skull realizes that the man behind the mask is not Crossbones, but Hawkeye, which results to be alive. The man confirms this, then takes off the mask and replaces it with a set of sunglasses. Hawkeye holds up a DISK, which contains the Skull's second-in-command, and states that Crossbones is taking a nap at the moment. Holding the villain at arrow point, Hawkeye tells him to release Hikaru. The Skull smugly admits he cannot - Hikaru is too far gone for anyone to reach. As if to prove the point, Hikaru charges up with Dimension Sphere energy to kill Hawkeye for injuring the Skull. Thor steps in the way of the blast and orders the Avengers not to help him. Since he and Hikaru are partners, this battle is theirs to fight. Hikaru eventually passes out, only to wake up seconds later, his old self once again. Hikaru is horrified by his behavior but Thor tells him not to let it bother him, as they are partners. Skull is shocked and Cap states that the bond between Hikaru and Thor has wrought a miracle. Tony, however, theorizes that Hikaru's biocode's self-repair system likely negated the Sphere's effects. Wasp makes a point of telling him now is not the time for a scientific explanation as the Avengers prepare to take down the Skull. Red Skull laughs at the fact that the team thinks they have already won and reveals a gargantuan HYDRA machine, powered by the Dimension Sphere, is under the base. Escaping to the cockpit, he takes control of the monstrosity as the Avengers are forced to flee. Outside the base, the machine is even bigger. The team dodges the first assault at the same time they synchronize with their partners. Having used up most of their time in the base, the Avengers are now synced to the kids and are now on a tight schedule. Iron Man adds that the six heroes will have a hard time handling the Skull on their own when Chris steps up and states that the team is not alone. He and the other kids with second heroes D-Smash Falcon, Black Panther, Iron Fist, and Power Man to help the Avengers. The battle goes quickly. Cap and Iron Fist team up while Wasp and Black Panther work together. Falcon, who is happy to know his S.H.I.E.L.D. partner and mentor is still alive, helps Hawkeye and Iron Man, while Hulk and Power Man trash the machine as well. The second heroes' time runs out and Iron Man and Akira, using Iron Man's Build Up Plate, deliver the decisive blow to Red Skull's machine. Thor delivers the final blow for Hikaru, and Akira D-Secures Red Skull from the wreckage of the HYDRA battle machine.