The first trailer for Avengers 4, officially called Avengers: Endgame, has arrived, celebrating Marvel’s 10-year achievement in building its Cinematic Universe.

It’s a journey through everything that’s happened over the last decade — from Tony Stark’s first jaunt as Iron Man to the devastating battle against Thanos in Avengers: Infinity War, which was released earlier this year. Many of Earth’s mightiest heroes are still dealing with the loss of their close friends who faded into dust during Infinity War’s most climactic moment.

Marvel has kept details about Avengers: Endgame under wraps since it began shooting last year, but the trailer does tease a little more of what’s to come in the heroes’ last stand against Thanos.

Avengers 4 marks the final film within the Marvel Cinematic Universe’s current generation. It comprises 22 films, including Spider-Man: Homecoming and the upcoming Captain Marvel. Avengers 4 will reportedly be the last Marvel movie for some key actors, including Chris Evans, who seemingly bid farewell to his character, Captain America, earlier this year on Twitter. Other original Avengers actors, including Robert Downey Jr., Mark Ruffalo, Scarlett Johansson, Jeremy Renner, and Chris Hemsworth haven’t said if they’re leaving following Avengers: Endgame.

Avengers: Endgame will be released on April, earlier than expected. It’s preceded by Captain Marvel, and it will be followed by Spider-Man: Far From Home.