The Maze Runner: The Death Cure.

Dear Thomas,
This is the first letter I remember writing. Of course, I don't know if I wrote before—before the Labyrinth. But even if it's not the first, it's most likely the last.
I want you to know—I'm not afraid. Or rather, not of death. What scares me most is oblivion. Losing myself to this virus—that's what scares me.
So every night I say their names out loud. Alby. Winston. Chuck. And I just say them over and over again, like a prayer, and it all comes flooding back. Just little things, like the sun shining on the Clearing at the perfect moment right before it disappeared behind the walls. And I remember the taste of Frypan's stew. I never thought I'd miss that stuff so much.
And I remember you. From the moment you appeared in the box—a scared little newcomer who couldn't even remember his own name. But from the moment you burst into the Labyrinth, I knew I would follow you anywhere. And I did. We all did.
If I could do it all over again, I would do it the same way. And I wouldn't change a thing.
My hope for you is that when you look back years from now, I want you to stay the same.
The future is in your hands now, Tommy, and I know you'll find a way to do the right thing - you always have.
Take care of everyone for me. And take care of yourself. You deserve to be happy. Thank you for being my friend.
Newt."

The island where the boys were sent is safe because the island is in the ocean and the outbreak didn't reach it.

The city, the only one that didn't fall apart, remained there. It had a normal population and modern life, but there was strict security there. People in red vests walked around the city and made sure no one was crazy. Then Denver was destroyed by the outbreak, and the survivors were taken to the island of the immune.

P.O.R.O.K. is an organization that unites the presidents of countries, the purpose of which is to find a cure for the outbreak. To do this, they send teenagers into a labyrinth, erase their memories, a labyrinth is a square area for living in the center of a large labyrinth, labyrinth A was a labyrinth made of stone walls, and labyrinth B was made of ice, when the guys got out of there they were sent to the P.O.R.O.K. base, from where they then escaped into a brazier and then to Denver.

The director of P.O.R.O.K., with chest-length blond hair, green eyes, slightly wrinkled skin, she is about 50 years old, sent the guys to the island of immune

People infected with the outbreak—a deadly virus that attacks the human brain. During the outbreak, a person develops black veins and black blood from the mouth, simulating tainted blood.

a scorched desert where the sun burns everything in its path and crazy people lurk everywhere

a 16 year old guy, thin but muscular build, fair skin, short brown hair, had high intelligence and could communicate telepathically with Teresa and Thomas, survived and he was also sent to the island of the immune

a guy with a strong and muscular build, he is 17, with sharp eyebrows, fair skin, short light brown hair, when the guys escaped from the labyrinth and he killed Chuck and Minho threw rebar at him, but he turned out to be alive and in the third part he was also taken to the island of the immune

A girl with oily black hair, blue eyes that made this feature expressive, skin as light as pearls, a thin and slender build, but strong and resilient. She had previously betrayed the guys and joined P.O.R.O.K. to find a cure for the outbreak and save the guys. She found a cure, and it turned out to be Thomas's blood. She had previously been Thomas's girlfriend. She died because when Denver began to burn and collapse, Teresa helped Thomas jump onto a helicopter from a burning and collapsing skyscraper, and she herself remained on the skyscraper, saving Thomas.

A girl with shoulder-length brown hair, brown eyes, fair skin, daring, slender build that emphasizes her agility and strength, when the guys were taken to the island of immune, she met with Thomas

short black hair, Hispanic, brown eyes, strong and muscular build, calm, was a cook in the Glade

A guy of Asian appearance, with brown eyes, short black hair, dark skin, strong and muscular, immune, sarcastic character, he is 17

Thomas has short, sandy brown hair, brown eyes, tall, muscular and slender, was one of the children with high intelligence and was able to communicate telepathically with Teresa and Aris, his blood became the cure for the outbreak and he was immune, he was about 16 years old when Thomas and all the boys were sent to an island for immune where it is safe, Thomas read Newt's letter and could never forgive himself for the death of Thomas and Teresa

Newt has short, light-colored hair that falls over his forehead, brown eyes, a thin, slender, but muscular and wiry build, and is about 17 years old. He was infected with the outbreak and, when the final stage arrived, he attacked Thomas, but his mind returned and he plunged a knife into his chest. He gave Thomas a farewell letter.