In just a matter of hours, 150,000 rabid comics fans of all stripes will descend on San Diego for Comic-Con 2014. It’s the mecca of all things nerdy for the summer, where some of the biggest names in geek culture and entertainment come to show off what’s to come for the next few years. This year’s event is a bit different, though: with movies like the new Star Wars and Avengers coming out, 2015 and 2016 already promise to be the biggest years in film history, and Comic-Con could very well be Ground Zero for a pop culture singularity.

We’ve put together a primer for what to expect for this year’s mega-event. There’s plenty that’s already been announced, but there may well be a few surprises that could steal the whole show. The madness starts tonight and runs all the way through Sunday. Make sure you’re ready.