Forever Young

Glenn searches Juan's possessions and finds Juan featured on an old baseball card for a team that disbanded over a hundred years ago. Juan remains enigmatic after he wakes and becomes interested in Glenn once he observes Glenn having an argument with SARAH. He encourages Glenn to make amends with Sarah and mentions his own wife, MARY, recently died. The men are interrupted when MITCH, a crazed man with a gun, takes people hostage. Glenn and Juan are locked in a storage locker along with LAURA, a nurse, ELLEN, a frightened teenager and PAUL who has a secret of his own.

To calm everyone, Juan tells them his life story and astonishes them by claiming he was a conquistador over five centuries before. He was attacked by a Seminole tribe and Juan ended up in a fight with their MEDICINE MAN. After gouging out his eye, an injured Juan escaped. Finding water, he drinks only to learn this was the legendary Fountain of Youth. Ever since, Juan stopped aging and all injuries heal with astonishing speed. The others assume this is a fictional story.

In a 1940s flashback, Juan spots a man attacking eighteen-year-old MARY SHANAHAN and rescues her. They soon begin a relationship. However, Juan is drafted. Mary fears this will end their romance and they have a fight, prompting Juan to go off to war believing that the relationship over. Not long after, Pearl Harbor is attacked and Mary believes Juan killed. However, Juan returns to her claiming the navy made a mistake. They reconcile and marry.

By the 1960s, Mary begins to notice that he isn't aging. While hanging Christmas lights, he breaks his arm and Mary rushes him to the hospital. The hospital puts his arm in a cast but when he returns home he confesses the truth to Mary. Breaking the cast, he shows his now-uninjured arm to prove his story. Mary refuses to accept the truth but later they are in a car accident and Juan breaks his back. Juan convinces Mary to stay with him until he heals and she finally accepts the reality of their situation.

The couple begins moving often to avoid attracting attention but Mary becomes unhappy. She leaves him and Juan falls into a period of deep melancholy. Eventually, Mary returns. They reunite but it now means they are forced to pretend to be a grandmother and grandson. Dementia strikes Mary in her 90s but she has a moment of lucidity at the end where she thanks him for their life together.

Back in the present, Laura and Ellen believe the story but Glenn is still doubtful. As Juan plans to stop Mitch, Glenn wants to help but Juan knocks him out. Juan tells the others that he was married several times before Mary and implies Glenn is one of his descendants. Juan confronts Mitch and stops him but he is shot in the heart, killing him before his body can heal.

In the aftermath, Glenn learns that Juan was a patient in a psychiatric facility until he escaped a few days earlier. Glenn discovers an article online that reveals Juan was a promising baseball player in 1914 until an accident ended his career. Glenn reconciles with Sarah and then calls his father to ask about their heritage as he now suspects Juan is his relative.

In a coda, Paul enters Highwater Industries where the building has been built around the Fountain of Youth. The man is a detective whose firm has been tracking Juan. The detective gives the Medicine Man a final report.