In the neon-drenched sprawl of Los Santos, where the line between criminal and survivor blurs, a lone hacker named Jax "Cipher" Marlowe scrapes by doing small-time gigs. Known for their knack for cracking firewalls and phreaking servers, Jax lives off-grid in the shadowy underbelly of the city, far from the glamour of Vinewood or the grit of the Rainspear projects. But Jax’s world changes when a cryptic USB drive—labeled encryption-key.bin —is slipped under their door.