X-Men Origins: Wolverine is a superhero movie in the Fox X-Men movie franchise which details the background and history of the character of Wolverine.
X-Men Origins: Wolverine is a superhero movie that occurs within Fox's X-Men Cinematic Universe, and was the first spin-off from the main series. The movie serves as a prequel to the main series, with the events from Origins beginning in 1845 and concluding roughly a decade before X-Men (Scott Summers makes an appearance as a teenage and is rescued by Charles Xavier).
The plot of X-Men Origins: Wolverine is loosely based on three Marvel comics limited series: Wolverine (1991), Weapon-X, and Origin, each of which tells pieces of Wolverine's background. The movie begins with Logan's birth (as James Howlett, though his real father's last name Logan) and follows him and his brother Victor as they both learn to capitalize on their mutations. It depicts Logan's entrance into William Stryker's Weapon-X, where he obtains his adamantium skeleton, his subsequent escape (events that are shown in flashbacks in X-Men and X-Men 2, up through the point where he loses his memories -- the condition he was in when he was first introduced in X-Men.
In addition to the main cast (Wolverine, Sabertooth, and Stryker), the film includes brief appearances by several characters that appear in other X-Men movies, including Scott Summers, Jason Stryker, and Charles Xavier.
There are also two very notable appearances by characters that appear to be, but are not, the same as characters from other movies
- The young mutant named Emma, capable of turning her skin to diamond, is not Emma Frost, who would later appear in X-Men: First Class.
- Wade Wilson is likely not the same Wade Wilson that would appear in Deadpool, as the second Wade Wilson had no active mutation at the time.
By design, X-Men: Days of Future Past erased any events from this movie that occur after 1973 from the film series' continuity. This includes everything that occurs after Logan quits Team-X (including getting his adamantium skeleton and losing his memory of his childhood.)