"Chungking Express" is structured as two distinct stories connected by the Midnight Express snack bar. In the first story, Cop 223's deadline of May 1st arrives, and his ex-girlfriend May does not return. He eats all 30 cans of pineapple, a symbolic act of consuming and purging his grief. That night, he meets the Woman in the Blonde Wig. They spend a platonic night in a hotel room where she sleeps off her exhaustion while he watches movies and eats. Before leaving, he cleans her shoes. This simple act of care is their only real connection. The next morning, she leaves and successfully enacts her revenge, killing the drug baron who betrayed her. She sends Cop 223 a pager message wishing him a happy birthday, a small, anonymous gesture that allows him to finally move on.
In the second story, Faye's secret intrusions into Cop 663's apartment become more bold. She cleans, redecorates, changes his CDs, and even adds more fish to his tank, subtly trying to erase the presence of his ex and insert herself into his life. Cop 663, deep in his stupor, is slow to notice, but eventually realizes his world is changing. When he finally discovers Faye in his apartment, he isn't angry but intrigued, and asks her on a date to a restaurant called California. Faye accepts but doesn't show up. Instead, she leaves him a hand-drawn boarding pass for California, dated one year later, and goes to the real California to pursue her own dreams. The ending takes place a year later. Faye, now a flight attendant, returns to Hong Kong and finds Cop 663 has bought the Midnight Express snack bar and is renovating it. He has saved her water-stained 'boarding pass.' In the final scene, she offers to draw him a new one, asking where he wants to go. He replies, "Wherever you want to take me," leaving their future hopeful and open-ended.