A second-hand pair of earphones connects two rivals to the world of the dead.

Shy student Phodduang can't seem to catch a break—when his crush on his straight best friend starts to become too obvious, he pretends that he really likes Jinna, an attractive but haughty mutual friend. After he convinces Jinna to go along with the lie, their famous friend Anda is suddenly discovered dead, and their lives take a harrowing yet absurd turn. Phodduang and Jinna discover that they can both hear mysterious whispers through a pair of earbuds, forcing them to become investigative partners as they try to connect the voices to Anda's murder. Amidst the tension and escalating danger, Phodduang and Jinna find that they may not dislike each other as much as they thought—and working together might be the key to solving Anda's death before anyone else gets hurt.