'The Fantastic Four: First Steps' ending and post-credit scenes explained: how does it set up 'Avengers: Doomsday' and more big Marvel questions answered

Full spoilers follow for The Fantastic Four: First Steps.

The Fantastic Four: First Steps has achieved lift off in theaters – and I imagine you have plenty of questions about the Marvel movie's ending and its post-credits scenes.

Below, I'll do my best to answer your biggest questions about the first Marvel Phase 6 project, including how it sets up the next Avengers film, aka Avengers: Doomsday. So, here's your final warning: major spoilers immediately follow for First Steps. Turn back now if you haven't seen it yet.