SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!
SPOILERS AHEAD
Kamen Rider Saber ＋ Kikai Sentai Zenkaiger: Superhero Senki Plot Summary and Synopsis
A Japanese superhero crossover film between Kamen Rider Saber and Kikai Sentai Zenkaiger, serving to commemorate both the Kamen Rider 50th Anniversary and Super Sentai 45th Anniversary.
Source: Wikipedia (CC BY-SA 3.0).