Elae Airy in Busan

This is the heart-wrenching story of Pui (played by Snack Ajcharee Srisuk), a rot hae (mobile concert truck) singer and her family's main pillar. Her life falls apart when she is kicked out of her band, dumped by her boyfriend, and buried under mounting debt. Seeking a fresh start and a way to survive, she decides to travel to South Korea with her best friend, Lisa (played by Ma Muang Sitthidet Bummanee).
Upon arriving, Pui struggles through grueling day and night shifts, desperate to earn enough to pay off her family's debts. Her situation takes a dark turn when she is assaulted by a customer, forcing her to flee with nowhere to go. She eventually seeks help from Hea Sak (played by Petchtai Wongkamlao), a Thai moneylender in Korea who finds her a job at a massage parlor. However, Pui continues to face bullying and is eventually suspended from work.
In her deepest moment of isolation, Pui meets Hong (played by Il Hong Min), a Korean man who was once a customer. His kindness and smiles give her the strength to keep fighting, and she begins to open her heart to him completely. However, she is met with a devastating revelation: the man she has grown to trust is actually an immigration officer whose job is to hunt down illegal workers—or "Little Ghosts" (Phi Noi)—just like her.