"Resident Evil: Death Island" is a CGI anime film set in the "Resident Evil" universe, blending action, horror, and science fiction elements. The story takes place in San Francisco, where a mysterious outbreak of a new strain of the T-virus occurs, leading to chaos and the re-emergence of bioterrorism. The narrative centers on a group of seasoned protagonists from the series, including Leon S. Kennedy, Chris Redfield, Rebecca Chambers, and Jill Valentine, who unite to investigate the source of the outbreak.

The plot unfolds as the team discovers that the outbreak is linked to a remote island facility, where a rogue scientist has been conducting illegal experiments to create advanced bioweapons. The island, once a prison, has been repurposed into a high-security research lab, housing dangerous creatures and infected subjects. As the team infiltrates the facility, they uncover a conspiracy involving a shadowy organization aiming to weaponize the virus on a global scale. The scientist behind the experiments, driven by a personal vendetta, seeks to unleash a new breed of bioweapons capable of surpassing previous iterations in lethality and intelligence.

Throughout the film, the characters confront both the physical threats posed by the infected creatures and the moral dilemmas surrounding the use of bioweapons. Leon and Chris, representing different branches of anti-bioterrorism efforts, clash over strategies but ultimately work together to neutralize the threat. Rebecca Chambers provides critical scientific expertise, while Jill Valentine’s combat skills and experience with bioweapons prove invaluable. The narrative builds toward a climactic showdown on the island, where the team must prevent the release of a devastating bioweapon that could trigger a global catastrophe.

The film explores themes of survival, trust, and the consequences of unchecked scientific ambition, staying true to the core elements of the "Resident Evil" franchise. The interplay between the characters, their shared history, and their individual motivations adds depth to the story, while the high-stakes action sequences and horror elements maintain the series' signature tension. "Resident Evil: Death Island" serves as a continuation of the franchise's overarching narrative, offering fans a blend of familiar faces, new threats, and a tightly woven plot centered on the fight against bioterrorism.