The film is composed of three distinct, unconnected segments, each telling the story of Agent J and her relationships with three different romantic partners.

Unbeknownst to him, Jolin has already been targeted by a secret organization, who abducts her and subjects her to brainwashing and intensive training, transforming her into an agent known only as "J".

Chapter Two: The Crack of Memory In a British prison, Jolin is recruited by a secret organization, who offers her a deal: complete a high-profile assassination in exchange for her freedom.

One day, while being followed by two mysterious men, Jolin receives assistance from a photographer, Lu Hsiao-tung, and the two quickly fall in love.

Chapter Three: The Illusion of Faith In Bangkok, Jolin receives her latest mission from the secret organization: to infiltrate a powerful crime syndicate and rescue Vince, who was believed to have died years ago in a bombing.

To approach the crime lord, Jolin assumes the guise of a nightclub singer and soon discovers that Vince is alive and working undercover within the organization.

When Vince, gravely injured, arrives at the meeting spot, Jolin desperately attempts to revive him, but he succumbs to his wounds and dies in her arms.

[12] Tom.com's critic Mi San commented: "The Agent J trilogy includes a plethora of sensational elements designed to captivate large audiences: male and female secret agents, bodyguards, foreign mafias, assassinations by various crime lords, gunfights, pole dancing, aerial silk acrobatics, human experiments, churches, prisons, prisoners, lesbian themes, car chases, drug trafficking, musical performances, and intimate scenes… A Hollywood blockbuster would rarely feature so much in a single film.

The film allocates too much time to spectacle and emotional manipulation, while crucial character development and narrative progression are glossed over in a superficial manner.

While the album features a variety of songs reflecting different aspects of Jolin Tsai's character, the film hastily attempts to unify them, lacking proper transitions, making Agent J feel fragmented.

In many instances, subtle background music—such as orchestral strings, electronic sounds, or ambient effects—would have been more fitting than Jolin Tsai's vocal performances.