Hulk and the agents S.M.A.S.H.
The Hulk team goes on vacation. They have fun. One time they go surfing and they see something. They just brush it off. They go surfing again and see the same thing, they thought it was a submarine. All of a sudden they and a lot of other people get sucked underwater. The hulk team manage to discover the submarine and sneak in. And do the story develops.
There will be more chapters give me time.