- Warning: The following content contains spoilers for Star Trek Beyond.
Jaylah and her family, like many before them, were attacked by Krall and imprisoned on Altamid. Jaylah and her family quickly realized that people were routinely taken from Krall's holding cells and killed, so she and her family decided to try to escape. During the attempt, Jaylah and her father were confronted by Krall's subordinate Manas. Jaylah's father stayed behind to hold off Manas, buying Jaylah time to flee at the cost of his own life.
Jaylah discovered the derelict hulk of the Starship-class USS Franklin and made it her home in it. She hid it using holographic technology and set up multiple defensive traps in the surrounding area. Inside the vessel, she discovered a music player, from which she particularly liked music featuring "beats and shouting." She also learned how to speak English from the ship's records. In time, Jaylah became a formidable warrior, skilled in martial arts and in wielding a quarterstaff that doubled as a rifle. Jaylah became a scavenger to obtain parts with which to repair the Franklin and leave Altamid.
In 2263, she came across Lieutenant commander Montgomery Scott, who had recently escaped the crash of the USS Enterprise and was inspecting a escape pod, and saved him from a pair of rival scavengers. Realizing Scotty was an engineer, Jaylah agreed to help him find his crew if he helped her finish her repairs.(TOS movie: Beyond)