Unknown Pleasures takes us on a journey through the lives of three disenchanted young individuals navigating the industrial landscape of Datong, located in China's Shanxi province, during the year 2001. Nineteen-year-old Bin Bin, portrayed by Zhao Weiwei, shares a modest apartment with his mother, a dedicated Falun Gong follower, close to the bustling textile mill. His best friend, the thrill-seeking Xiao Ji, played by Wu Qiong, lives in a cramped space with his father and spends his days racing his motorcycle throughout the city.
Their lives intertwine when they encounter Qiao Qiao, a young and ambitious singer and dancer representing the Mongolian King Liquor company. Instantly captivated by her charm, Xiao Ji's infatuation leads to complications, especially with Qiao Qiao's boyfriend, Qiao San, a menacing loan shark portrayed by Li Zhubin.
As the film unfolds, the trio's lives reflect an unsettling sense of aimlessness. Bin Bin, often found lounging with his girlfriend watching TV, contrasts with Xiao Ji, who appears directionless aside from his flirtations with Qiao Qiao. A turning point occurs when an explosion at the textile mill propels them into action: Qiao Qiao urgently needs funds for her injured father’s hospital visit, prompting Xiao Ji to retrieve ¥2000 from the bank. Their gratitude leads to an afternoon of meals and dancing, during which Xiao Ji reminisces about Quentin Tarantino's Pulp Fiction. However, chaos ensues when Qiao San's thugs capture Xiao Ji, subjecting him to humiliation and violence. Undaunted by the danger, Xiao Ji seeks revenge but is dissuaded by Bin Bin, who warns him of Qiao San's gun.
Eventually, Qiao Qiao finds herself without her boyfriend, leading to a complex relationship with Xiao Ji. In a moment alone in a hotel room, she philosophizes about Zhuangzi, suggesting that "we should do what feels good." Tragedy strikes when Qiao San dies in an accident, yet the film hints at Qiao Qiao abandoning Xiao Ji, leaving him distraught as she is last seen in a run-down club, donning a blue wig as a prostitute.
Meanwhile, Bin Bin's attempt to join the People's Liberation Army is thwarted by his hepatitis diagnosis, a setback that shatters his hopes. In desperation, he borrows ¥1500 from a small-time criminal known as Xiao Wu, portrayed by Wang Hongwei. Although he initially buys a cell phone for his girlfriend, their encounters turn sour when he refuses her affection, lamenting the bleak future that lies ahead for him.
In a climactic twist, Bin Bin and Xiao Ji concoct a plan to rob a bank, inspired by the American films they often watch. With a fake bomb strapped to his chest, Bin Bin is taken to a China Construction Bank, only to be arrested immediately. In a frantic escape, Xiao Ji rides his motorbike until it falters, leaving him to hitchhike to the unknown. Bin Bin's fate becomes chillingly apparent as he finds himself at the police station, accused of robbery—a capital offense. The film concludes on a poignant note as an officer forces Bin Bin to stand and sing. Choosing to perform Ren Xiao Yao, he expresses a yearning for spiritual freedom through love.
