Captain America gets an invite to the wedding of Wasp and Yellowjacket, a character who only appeared a few days ago. Last issue he claimed to have shrunk her boyfriend Goliath to smaller than ant-size and left him to die. But still Wasp wants to marry him. And YJ wants to be an Avenger, even as his brash personality rubs everyone up the wrong way.
As Jarvis prepares for the wedding at Avengers Mansion, the caterers suddenly turn out to be Ringmaster and the Circus of Crime. They intend to make a name for themselves by killing the Avengers and all the other super-guests, especially Thor in revenge for their defeat in Thor #147.
Invisible Girl and Crystal of the Fantastic Four help Wasp get ready. The guests are a who's who of marvel superherodom. As well as the rest of the FF and the current Avengers (minus Goliath), we see the senior Avengers Cap and Iron Man (Thor is absent) and their ally Black Knight. The X-Men (without Prof X), Daredevil, Dr Strange, Spider-Man and Nick Fury are also present.
After the ceremony Hawkeye hides his anger by going to see what's holding up the cake, and is KO'd by the Circus. When the cake itself arrives, it turns out to contain Princess Python's python.
The current Avengers send all the guests away, including Cap and Iron Man. The Circus get fed up waiting for Thor to show, and attack. Of course they don't get very far until the python grabs Wasp again. But Yellowjacket can't abide to see her in peril, and suddenly starts growing, revealing himself to be Goliath all the time.
The Avengers now make short work of the villains. Hawkeye revives to find it all over. Hank explains that an accident with some chemicals gave him an alternate personality, one who was able to do what he had been reluctant to, propose to Jan. Jan says she recognised him when he kissed her last issue, and adds that the marriage is legal, even under the wrong alias.