Sometime during the 1990s, late at night, two Malay army reservists dig a shell scrape in the ground while participating in a military exercise. To their shock, they uncover human hair and, as they attempt to pull it from the soil, they come face-to-face with a female ghost lurking behind, which frightens them to the point of death. The scene then shifts to Ah Nan and Ah Lei, two Chinese army reservist soldiers who are trying to convince their commanding officer, LTA Chua, to give them a day-off during their final unit exercise. They concoct stories about the ghost and Ah Nan's revelation from a deity, claiming Ah Lei’s grandmother has passed away. However, their efforts comically fail when Chua challenges them, suggesting that the deity should contact him via a pager and even goads them into a duel.
Following this, another soldier, Ah Tan, approaches Lieutenant Chua with a request for a day-off due to ill health from internal injuries but faces rejection as well. From the outset, Ah Nan and Ah Lei doubt Ah Tan's illness, with Ah Nan wagering that Ah Tan will be denied his request. As they leave the commander's office in pursuit of Ah Tan, they run into their Indian Regimental Sergeant Major, 1WO Muthu. Muthu confronts Ah Lei about his dyed yellow hair, ordering him to either shave it off or revert to black.
Later, while conversing with fellow reservists, Ah Nan and Ah Lei learn of a rumor about Muthu having died in a car accident where he lost his head, causing them discomfort. This unsettling news is later revealed to be merely a prank by their comrades during a briefing before the exercise.
As they continue their training, Ah Tan, despite still feeling unwell, prepares traditional Chinese medicine while Ah Nan and Ah Lei cook their meals. However, when Muthu inspects their work, he scolds them for exposing themselves to enemy fire with their cooking. That night, in a location known for its hauntings, Ah Tan and Ah Lei decide to frighten Muthu, recalling the folklore of buried hair, but leave Ah Tan digging alone in the dark. Later, Muthu encounters the same ghost encountered previously and, in his fright, runs into Ah Nan and Ah Lei who are dressed up as ghosts to scare him, which only adds to his fear.
Upon reporting this encounter to Lieutenant Chua, Muthu is dismissed. Meanwhile, as the night goes on, Ah Tan's condition deteriorates, leading Muthu to take him back to the camp's medical center. During their drive out of the jungle, Muthu sees the ghost again and crashes the jeep, prompting him to return to Chua to explain that Ah Tan has suffered fatal injuries.
While wandering the jungle, Ah Nan and Ah Lei are shocked to see a ghostly Ah Tan, who they believe is merely trying to prank them. They mock his appearance, but he is actually a specter behind Muthu, startling the sergeant at their commander's tent. Chua chastises Ah Tan for malingering while the signs of his haunting become apparent, culminating in a frightening apparition of the female ghost emerging through Ah Tan’s body, which sends Chua fleeing into the woods amidst his terrified screams.
After leaving the exercise area, Ah Nan and Ah Lei encounter the police handling the aftermath of Ah Tan's death near the wrecked jeep, shocked to discover another body bag, which leads them to realize it belongs to Muthu. They witness Muthu's spirit lamenting over his lifeless body, repeating that he was indeed dead. The ghostly figure chastens himself, hitting his forehead until it detaches, causing the soldiers to scream. Though frightened, they soon realize Muthu is with them in the van, alongside Ah Tan’s ghost, who messily promises that they have finally earned a day-off. However, their ensuing panic escalates as the ghostly woman materializes behind them, gripping the back of the vehicle and pulling it back into the depths of the jungle, leaving the terrified men to scream for help.
The narrative then shifts focus to Ah Hui, a middle-aged bachelor struggling in life with no wealth and failed relationships, having been dumped 20 times. He encounters a supposed benefactor, Ah Hai, who claims to ensure his riches through a lottery win. Ah Hai guides Ah Hui to Mount Vernon Columbarium to pray for fortune. After picking up a wallet containing a jade bangle, which Ah Hai warns him against, Ah Hui finds two lucky numbers for the 4D lottery. Against the odds, both bets win, leading him to quit his job as a dishwasher, pay his debts, and splurge on luxuries, even capturing revenge on an ex-girlfriend by threatening her with a cobra.
However, as his gambling spree continues, things take a downturn and he quickly loses a fortune after Ah Hai leaves him. A series of urns falls onto his car, and he is pursued by countless others that seem to taunt him, culminating in a chaotic explosion of urns. The next day, he confides in Ah Hai about the previous day's supernatural encounter and jeopardizes their benefits by not honoring the spirits' blessing, leaving him with little money. Ah Hai introduces him to Xiao Juan, a ghost who has developed feelings for him.
Through a series of revelations, Ah Hui learns that Xiao Juan is indeed connected to Ah Hai, leading to a disturbing discovery that they are one and the same—a relationship that culminates in an unconventional marriage after an unexpected proposal by Xiao Juan. Ah Hui, initially repulsed, is forced into accepting when her family threatens him, eventually leading to their wedding at a temple despite his reservations.
After experiencing what he believes is an ordinary day, Ah Hui meets with a tragic end as he is struck by a hearse driven by Xiao Juan herself. Enraged by her deception, he confronts her about the promise of safety she had made. Unmoved, she brushes off his anger and lures him into another adventure meant for the departed. Ultimately, the narrative closes with a reminder that deals with the devil come with a heavy price, as the screen fades to black, highlighting the morbid consequences of Ah Hui's fateful decisions.
