Tony Stark comes to the Avengers and tells them he is fighting a takeover bid for Stark Industries by a businessman named Cornelius Van Lunt. He needs all the money he can get, including the back rent he hasn't charged them for the Mansion. The Avengers agree to raise the money to pay him. Although Black Panther stuns them all when he tells them he won't be able to devote all his time to this as he's just started a job as a teacher. And he's not allowed to use Wakanda's wealth to bail Stark out.
A criminal gang called the Split-Second Squad, with masked leader Kronus, are reviewing recent jobs that were foiled by various Avengers. Kronus predicts that the Avengers won't be a problem soon.
The Avengers advertise themselves for hire, specifying they want a lot of money quickly. Van Lunt offers to hire them. In fact he admits that the whole thing was a scheme to get them to work for him as a wrecking crew, and he'll drop the takeover bid after they've done the jobs he wants.
All this was a flashback, and the opening scene has Goliath, Quicksilver, Scarlet Witch and Vision using their powers to demolish a building for Van Lunt. It turns out the city was going to knock it down and replace it with a playground. But Van Lunt bought it out from under them. Now the site has been cleared, he can sell it back to the city at a profit.
Meanwhile Panther is teaching in a ghetto school as Mr Charles.
The four Avengers next job is to make safe an abandoned tunnel under the East River. But Kronus blows it up while they're in it. Then he and his gang rob a bank. But they are stopped by Black Panther. And then the rest of the Avengers turn up.
Kronus is unmasked as Van Lunt's assistant Wilkins. Van Lunt had bankrupted him, bought his business, then hired him as a gofer. Wilkins was trying to frame Van Lunt by wearing a fat-suit as Kronus.