In the Step Up All In ending, the LMNTRIX and The Mob perform together in the finals, Sean and Andie land the trick they argued over, and the producers overrule the host to name the LMNTRIX winners.
Why does the trick matter so much? In my opinion, it is the most honest piece of storytelling in the film. Earlier, Sean pushes Andie into a move she is not ready for, and she walks off the floor. By the finals, Sean has apologized and stopped treating her as a tool for his ambition, so the same trick lands as a shared choice rather than a demand. The kiss that follows reads as the reward for that change, not just the standard romantic beat.
Sean's pre-show line to the crowd, to stop worrying about winning and enjoy the show, is the film's thesis. It could be argued that it is also a quiet answer to the rigged contest. Host Alexxa Brava is secretly tied to the Grim Knights' leader Jasper, so the competition was never going to be fair. Once the crews unite, the result no longer depends on one corrupt judge, and the producers step in to confirm the LMNTRIX as winners of the three year Las Vegas contract.
Does Moose come out in the ending? Yes. After leaving Las Vegas for Los Angeles to win back Camille, he and Camille make up and both return to the group before the finals, and the crews celebrate together at the close.
So, is Step Up All In the last Step Up movie? It is the last main film so far, and it sets up nothing further. No studio or trade source has announced a new Step Up film, which is why our step up 6 page treats a sequel as unannounced. The brand has continued on television instead: TheWrap reported in 2020 that the series Step Up: High Water moved from YouTube to Starz. Paradoxically, a film that ends with every crew united is a tidy place to stop. For the story across all five, see the step up timeline, or see where the film lands in step up movies ranked.