High school teacher Lam Yiu-Kwok is in the midst of a midlife crisis. His wife, Man-Ching, has been unfaithful; his friends are reaping the rewards of successful business careers while he earns a comparatively meager salary at an unglamorous job; and one of his young students, Choy-Lam, has fallen for him. When Man-Ching leaves for a month to help her former lover, a jealous Yiu-Kwok is tempted to retaliate by pursuing an affair with Choy-Lam.
The story of two women, two generations apart, who coincidentally return to Hong Kong from San Francisco where they had their first, fleeting encounter on the streets as strangers.
A self-styled accident choreographer, the Brain is a professional hitman who kills his victims by trapping them in well crafted accidents that look like unfortunate mishaps. When the team's next assignment goes disastrously wrong, Brain begins to suspect that someone else has planned an ‘accident’ on them.
The Crime Investigation Department is assigned to protect a princess-consort coming from the Republic of Puerto Risi. They arrange a fantastic trip to introduce the princess-consort to Hong Kong, but a big crisis looms on the horizon.
