We’ve already given you the full breakdown of what to expect from next year’s Captain America: Civil War, including character motivations and important plot points. But that doesn’t even begin to cover the actual source material, which is based on a seven issue story arc that involves the Superhero Registration Act.

You should really read the Civil War comics to get the most thorough understanding of what takes place. But in case you don’t quite have the time, we’ve made a video detailing the events that occur. There are some major spoilers ahead, so if you plan on reading the comics, and you want to go into the movie fresh, avert your eyes.

The basics thing to know is that, following a major catastrophe, the government mandates the Superhero Registration Act, which requires anyone with extraordinary powers (or access to magic or exotic technologies) to sign up. That would essentially put them under official regulation, not too dissimilar to a police officer. Anyone who refuses to sign up would be considered a rogue superhero, and is therefore a threat.

Captain America just so happens to be among the superheroes who oppose the new regulation.

While superheroes are required to act under official regulation, they’re also required to reveal their identities, which puts family members and other loved ones at risk. In the Marvel Cinematic Universe, you’ll know the kind of implications that might have for someone like Hawkeye, who went to great lengths to keep his family a secret.

The government, including Tony Stark, argued that signing up would make superheroes more effective, and ensure that no further damage would be done by superheroes acting on their own accord.

That said, there’s much more to the story than what’s mentioned above, and even a video can’t do the comics justice. Major comic arcs always have tie ins with other books in the universe, so there’s still a lot to read.

Based on the official synopsis provided by Marvel, it sounds like the movie will play out a little differently than the comics:

After the events of Avengers: Age of Ultron, when Captain America and the Avengers’ handling of an international incident results in collateral damage, politicians look to form a system of accountability and a governing body to determine when to call in the Avengers, which results in the fracturing of the team while they attempt to protect the world from a new enemy.

In the comics, much of the story focuses on the fighting between Captain America and Iron Man, which, if you read it, doesn’t end well. Chances are Marvel won’t quite go so far in the movie, especially with a “new enemy” on the horizon.

Civil War will be the ultimate test of character for our heroes. Age of Ultron spent a lot of time setting up what will play out in Cap’s new story, which will further strain character relationships as they navigate an increasingly hostile and complicated political system. In theory, the Superhero Registration Act sounds like a smart idea. But at what cost? Civil War will explore the consequences as characters like Iron Man and Captain America — along with legions of other heroes — grow farther apart.

Check out the video above to get a full rundown of what you’re getting into if you do decide to read the Civil War story.

As for the movie, Captain America: Civil War will hit theaters on May 6, 2016. You can see some images from the set below.