Synopsis
Most of the Avengers Academy staff (and other Avengers) are out handling crises (we see Giant-Man and Quicksilver dealing with a volcanic eruption of Mount Etna, Italy). Tigra and Jocasta have been left with the students because their powers aren't effective in these situations, and also the other countries might not appreciate their problems being used as teaching aids. The teens appreciate this but team leader Reptil reminds them that they beat Korvac (#12). However Hazmat reminds *him* that it was their future adult bodies and skills that enabled them to do it.
Jocasta forwards a request from Paris police for Avengers help with Electro who's taken control of the Centre National De La Recherche Scientifique. Tigra wonders who they can call on but Humberto Lopez says the team need a morale boost and they should be able to handle a single Spider-Man foe. Striker boasts his electric power can beat Electro's, and more sensibly Tigra admits that the others have experience fighting *him*. Jocasta chimes in that the odds are very good. Hank Pym's been listening in while volcano-fighting and agrees. So Tigra calls "Avengers Academy Assemble".
They pop through 1 of the Infinite Avengers Mansion's many dimensional doors into the CNRS where they find all the scientists trapped inside because Electro has shorted out the door controls. But robot/AI Jocasta back in the Mansion has hacked into the system and opens them. The 'hostages' rush out so the team don't now have to worry about civilian casualties. She's also tracked Electro's trail of disabled security cameras down 2 levels to a sector containing hazardous materials.
The team go down and Tigra asks Striker if his electric power allows him to sense exactly where the electric villain is. Brandon Sharpe says he's never tried such a thing. But then Electro zaps them all and mentions that it's how *he* knew where *they* were. Tigra is worst hit and lies unconscious. Striker and Electro go blast to blast but Max Dillon is tricking him. He's been absorbing Brandon's electricity and can now down him with a punch. Finesse hurls a battle stave at his head, but it's stopped by a force field, which Mettle also bounces off. And Electro declares that he's not alone.
Out of a mist generated by Mysterio appear the current Sinister Six including leader Dr Octopus, Sandman and Rhino. Reptil tries to call Jocasta for help but Mysterio blocks the comms, and Finesse figures he'd been also hiding their presence from the security systems. He emits more gas, probably hallucinogenic, but Veil neutralises it with her own gas and Mettle punches him. He tells Rhino and Sandman to kill the kids but those 2 say they don't kill children, but they don't mind hitting them. Doc Ock says he doesn't care as long as they keep them from interfering with his work. Hazmat fires radiation at Electro, Rhino and Sandman, but SM says it was radiation that gave him his powers as he buries her in sand. Striker threatens to turn Sandy to glass but Rhino bowls him, Finesse and Mettle over. But then Reptil turns into a large dinosaur and whacks R&SM aside with his tail. Mysterio strikes back at Veil because his gas-control is better than hers, but Mettle hits him again. Lopez tells Finesse to deal with Mysterio while Veil gasses Electro, and then he meets Rhino head on as another large dino. Striker does succeed in fusing 1 of Sandman's arms to glass and Mettle offers to smash it, but 'Berto tells him and Hazmat to go after Doc Ock because he's probably doing what they actually came here for.
But then an awake Tigra stops them and says she's heard that the staff are back at the Mansion and need a dimensional door opened down here to come to their aid. Hazmat claims they've got it covered but teacher Tigra insists. So Mettle activates the portal receptor he carries but reminds her that they have to tell Jocasta to activate the other end, and Mysterio's blocking comms. So a kick from Tigra shatters Mysterio's helmet and a stave from Finesse breaks his wrist controls(?), and then Hazmat is able to send a message to Jocasta to open a door to Mettle's position. They see a door with (only) Jocasta framed in it ...
... and then the scene shifts to Ock's lab. Ock gloats that he just needed a door activated before he could hack it and redirect it. He tells his team that he's got the Fissile Power Generator safely disconnected, and so Rhino pushes it through the doorway while the others keep the kids busy. In particular Electro zaps Reptil with so much electricity that Striker worries it could stop his heart. Ock continues gloating that Pym's dimensional door tech was just what he needed to transport the machine quickly and untraceably to his secret base. Finesse accuses him of manipulating them as she throws a stave at him. He catches it in midair and agrees that it wasn't his finest moment. But he says that a group of villains recently abducted the finest minds in the world, including Pym, and they passed *him* over. He had to avenge that insult by tricking Pym and his band into facilitating this heist. He arranged the volcanic eruption and other crises and sent the fake message which lured them here. And he had already worked out how to override the dimensional door tech. (But he won't risk doing it again because Pym will be ready for him.)
Then Tigra KO's Finesse from behind. And reveals 'herself' to be Chameleon who chides the kids for not being able to count to 6. He then apologises to Mysterio for kicking him, and the other claims he was only pretending to be hurt. Humberto Lopez tries to get up to stop them but he's too badly burned. Ock says the place is set to blow up after they exit. When they've gone the doorway reverts to connecting to the Mansion where Jocasta has been joined by GM and Quicksilver who dashes around and finds the limp body of the real Tigra. Mettle carries Reptil and they all get out just before the explosion goes off.
15 minutes later Henry Pym accepts a dressing down from the French police chief, and he and his team are banned from France.
Later Jocasta tells him that Reptil and Tigra both have 3rd-degree burns. Reptil also suffered ventricular fibrillation but Striker corrected it. They're both now in the med-bay. News reports are blaming the Avengers for sending inexperienced trainees into action. Pietro Maximoff brushes it off as a typical reaction of the fickle public. Hank accepts responsibility but Tigra says it her fault and Reptil claims he persuaded her they could handle it. But Pym says the fact that they weren't ready makes it *his* fault because he hasn't trained them well enough. There will continue to be times when the Avengers need *everyone* to stand up. So from now on they'll be having more combat classes.