Just read and say "OK!": This horror/thriller/action story follows Lila, a 16-year-old engineering student who visits her family on a remote island for an experimental drug trial. The trial promises to cure all diseases and prolong life, but the participants start experiencing strange and intense symptoms. Gradually, everyone in the trial dies except for Lila. The others rise as zombie-like beings, whereas Lila transforms into a powerful and resilient vampire-like being immune to sunlight. The undead assimilate or kill anyone who isn't like them, and the infection spreads uncontrollably. Lila survives alone on the island, but eventually reaches the shore where she confronts a military unit that is trying to exterminate the undead. Lila convinces them to spare her and joins a mysterious organization, swearing revenge on those responsible for the drug trial and promising to find a cure. The story is full of tragedy, with Lila having to deal with the consequences of her actions, the painful loss of her friend, and the reversal of her humanity. The story builds slowly as the horror and action elements intensify, and the setting of a remote island adds to the isolation and tension. The undead beings are a chilling and relentless threat, and the story ends with the promise of a sequel or spin-off as Lila begins her quest for revenge and redemption. Chapter 1: Island Experiment - Lila and Sara arrive on a remote island, where Lila's family has joined a drug trial for the Hellion Corporation. Lila meets Dr. Ramirez, the lead scientist, and Marco, her childhood friend who has become her boyfriend since her last visit. Chapter 2: The Experiment Begins - Lila's family takes the experimental drug, hoping to cure their illnesses. Days pass, and Lila's family starts experiencing strange symptoms. Chapter 3: The Transformation - Lila discovers that her family has died, but in the process, she begins experiencing a strange transformation. She grows stronger, and her senses become more acute. Meanwhile, Marco starts exhibiting strange symptoms, and Sara offers to help Lila investigate what happened to her family. Chapter 4: Betrayal - Lila and Sara break into the infirmary to investigate further. They find the remaining trial participants transforming into zombie-like beings. Dr. Ramirez and Juan, the island caretaker, reveal that they had known about the risks of the drug but continued with the experiment regardless of the consequences. Juan betrays Lila, and she is forced to witness Marco's transformation into a zombie-like being. Chapter 5: The Undead Take Over - The infected trial participants begin attacking everyone on the island. Lila and Sara are forced to fight for their survival against these undead beings, while Juan tries to eliminate them both. They are eventually saved by a mysterious figure who offers them shelter and gives them information about the experimental drug. Chapter 6: Desperate Measures - Lila discovers that the Hellion Corporation is responsible for the drug trial, and that they had known about the risks of the drug. Lila vows to take down the Corporation, and with the help of the mysterious figure, they plan to stop the infection from spreading beyond the island. Chapter 7: The Last Stand - As the zombie infection spreads, Lila, Sara, and the mysterious figure sneak onto a military ship heading to the mainland, where they plan to expose the Hellion Corporation's evil plan. They discover that the Corporation plans to weaponize the zombie-like beings as weapons of war. As the ship approaches the coast, Lila, Sara, and the unknown figure prepare to face off against the Corporation's army of the undead. Chapter 8: The Final Battle - In a dramatic showdown, Lila and Sara fight their way through the ship, facing off against the undead soldiers. The mysterious figure is revealed to be an inventor who specializes in advanced weaponry, and they help Lila and Sara devise a plan to stop the Hellion Corporation. As they fight, they discover that Lila has an immunity to sunlight that the other undead beings don't possess. Finally, Lila and Sara confront Dr. Ramirez and Juan, determined to take them down and stop the Hellion Corporation once and for all. Epilogue - The story ends with the Hellion Corporation exposed and the threat neutralized. Lila and Sara leave the island, committed to finding a cure for Lila's transformation and bringing justice to those affected by the experiment. Meanwhile, with the promise of a sequel or spin-off, the fate of Juan remains unknown.

Okay, make it so that Sara begs Lila to feed on her to fight Marco but Lila accidentally kills her due to bloodlust and in a trance she kills Marco.

Ok, keep the revisions short.

Not that short.

Can you make a short summary. "This horror/thriller/action story follows Lila, a 16-year-old engineering student who visits her family on a remote island for an experimental drug trial. The trial"

Not that short, 4-paragraphs.

I guess, just update the following with the new revison: "This horror/thriller/action story follows Lila, a 16-year-old engineering student who visits her family on a remote island for an experimental drug trial. The trial promises to cure all diseases and prolong life, but the participants start experiencing strange and intense symptoms. Gradually, everyone in the trial dies except for Lila. The others rise as zombie-like beings, whereas Lila transforms into a powerful and resilient vampire-like being immune to sunlight. The undead assimilate or kill anyone who isn't like them, and the infection spreads uncontrollably. Lila survives alone on the island, but eventually reaches the shore where she confronts a military unit that is trying to exterminate the undead. Lila convinces them to spare her and joins a mysterious organization, swearing revenge on those responsible for the drug trial and promising to find a cure. The story is full of tragedy, with Lila having to deal with the consequences of her actions, the painful loss of her friend, and the reversal of her humanity. The story builds slowly as the horror and action elements intensify, and the setting of a remote island adds to the isolation and tension. The undead beings are a chilling and relentless threat, and the story ends with the promise of a sequel or spin-off as Lila begins her quest for revenge and redemption. "

We need a prologue. Giving a reason as to why they join this experiment.