In 2024, the computer network prevails throughout daily life. Sora Yuuki is a 14-year-old girl. One day, she is invited to an online game "The World". After an accident in the game, the real world begins to deform.

Based on the CyberConnect2 HIT GAME, now will be released in a CG Movie! 
The Movie will be placed in the storyline of each .hack//G.U. games trilogy. The story follows Haseo, a player in the online MMORPG called The World:R2 at first depicted as a PKK (Player Killer Killer) known as the "Terror of Death", a former member of the disbanded Twilight Brigade guild. Haseo encounters Azure Kite (believing him to be Tri-Edge and blaming him for what happened to Shino) but is hopelessly outmatched. Azure Kite easily defeats Haseo and Data Drains him, reducing his level from 133 to 1 and leaving him without any items, weapons, or member addresses. He is left with a mystery on his hands as to the nature of the Data Drain and why Azure Kite is in possession of such a skill. 
Eventually Haseo gains the "Avatar" of Skeith. Acquiring the ability to call Skeith and wield his abilities, such as Data Drain. With Skeith as his strength, Haseo begins the quest for a way to save Shino. 
He is seen seeking out a PK (Player Killer) known as Tri-Edge, whose victims supposedly are unable to return to The World after he PKs them. Haseo's friend, Shino, was attacked six months prior to the events of the game by Tri-Edge, and the player herself, Shino Nanao, was left in a coma. 
(Source: AniDB)

The characters from previous .hack//G.U. Games and .hack//Roots receive an email from Ovan. He is requesting them to go to Hidden Forbidden Festival where is set up a mysterious summer festival. There they find an AIDA Chim Chim who wishes to peacefully co-exist with the other players of The World. It then transforms into the word "Returner", so they assume it to mean that Ovan will return to The World.
 
(Source: Anime News Network)

After the destruction of "The World" in 2015, CC Corporation rebuilt the game using data from what was previously to be another game. "The World R:2" was then released in 2016. A newcomer to the game, Haseo, is instantly PKed and then revived by a mysterious man known as Ovan. With the problem of PKs occupying the game, Haseo soon after receives help from a female Harvest known as Shino. Amidst curiosity and confusion, Haseo is lead to joining the guild known as the Twilight Brigade. The guild that searches for the legendary object known as the "Key of the Twilight". Set before the .hack//G.U. game.

As an expression of gratitude for the heroes of both the ".hack//Sign" and the ".hack" game series, Helba has prepared a special event for all the characters to find the newly established 'Twilight Hot Springs'. The characters can get their well deserved rest and relaxation by having a soak in the wonderful hot springs, but there is only one problem -- the hot springs are hidden and there have been mysterious player murders. With the only clue being the word &ldquo;GIFT&rdquo;, the race has begun to find the culprit and the location of the hot springs. 
[Written by MAL Rewrite]

While playing the newly released MMORPG &lsquo;The World&rsquo;, Minase Mai and Tomonari Kasumi collapsed in the real world and were sent to the hospital after hearing a mysterious sound. Only Mai had recovered while her friend Kasumi had slipped into a mysterious coma. Mai is later approached by the creator of &lsquo;The World&rsquo;, Tokuoka Junichiro, who unveils to her that, just like her friend, six other players across the country had also collapsed while playing &lsquo;The World&rsquo; and are now in mysterious comas. What exactly is &lsquo;The World&rsquo;, what is this mysterious sound Mai keeps on hearing, and why are people slipping into comas from this game? Minase, Junichiro and their acquaintances set off to get to the bottom of this problem before any further harm happens. 
[Written by MAL Rewrite]

A young wavemaster, only known by the alias of Tsukasa, wakes up in an MMORPG called The World, with slight amnesia. He does not know what he has previously done before he woke up. In The World, he is suspected to be a hacker of the Crimson Knights, as he was seen accompanying a tweaked character in the form of a cat. Unable to log out from the game, he wanders around looking for answers, avoiding the knights and other players he meets along the way. 
As Tsukasa explores The World, he stumbles upon a magical item that takes the form of a 'guardian', which promises him protection from all harm. Subaru, the leader of the Crimson Knights, along with several other players who became acquainted with Tsukasa, set out to investigate why Tsukasa is unable to log out, and attempt to get to the bottom of the problem before it gets out of hand. 
[Written by MAL Rewrite]