You must clear the game once with X to unlock the movie in the "Options" or "Bonus" menu.
The 25-minute OVA serves as a to the first Mega Man X game. It explores the days leading up to the Maverick rebellion: MegaMan Maverick Hunter X: The Day of Sigma
The OVA is available from the start in the "Museum" section of both Collection 1 and Collection 2; no gameplay is required to unlock it here. Story Overview (Prequel Lore) You must clear the game once with X
The film highlights the philosophical rift between Sigma and X. Sigma is obsessed with "Reploid potential" and evolution through sacrifice, while X’s hesitation to use force (to avoid harming hostages) is seen by Sigma as a weakness. MegaMan Maverick Hunter X: The Day of Sigma