First Steps" has a thrilling ending that teases Dr. Doom and where the MCU goes from here in "Avengers: Doomsday."

Marvel’s ‘Fantastic Four’ introduces powerful new characters to the MCU, and ends with tease for ‘Avengers: Doomsday’—here’s the ending and post-credits scene, explained.

First Steps below. The plot of The Fantastic Four: First Steps revolves around Marvel’s First Family’s dire encounter with Galactus, the Devourer of Worlds (Ralph Ineson). Doomed to feel an everlasting hunger that can only be appeased by the total consumption of worlds brimming with life,