Tsang Kan-cheung as Northern Lion troupe member.Gladys Kwong as Department store female student.Yeung Chi-tung as Department store urchin.So Chun-kit as Kid playing computer game.Hui Man-lung as Kid playing computer game.Hau Woon-ling as Old lady robbed outside of temple.Kenny Bee as God of Prosperity (財神) (cameo).Kelly Chen as Goddess of Mercy (觀音) (cameo).Kate Yeung as Ding Fong (丁芳), Don's younger sister.Mia Yam as Saint of Nine Heavens (九天玄女).Cheung Tat-ming as Kong To-hoi (江道海), Cheng Wo's cousin.Teresa Mo as Mo Ching-ching (毛程程), Pat's wife.
When Thunder God attempts to protect Ding with magical powers, he does not know how to properly put spells, resulting in a large chaos. The Saint of Nine Heavens also finds out from the Life and Death Collection book that on New Year's Eve, Ding's life will be in danger as Pat had hired assassins to kill Ding. Ding is a director of a department store and is often bullied by his superior, Pat Sau-kong ( Tony Leung), while his brother-in-law have fallen in love with a gambling addict, Miki ( Miki Yeung), resulting in a huge debt from loan sharks. However, the situation is not as simple as he imagined to be.ĭing Don is currently in his 30s, living with his beautiful wife, Cheng Choi ( Louisa So), and younger brother-in-law, Cheng Wo ( Alex Fong). Thunder God, who possess great strength in his magical powers, decides to fulfill his promise and descends to Earth and help Ding Don go through his crisis. If Thunder God does not fulfill his commitment, it will be a disadvantage for him when campaigning for his proposal. At this very moment, Ding Don ( Vincent Kok), now grown up, is facing a death amulet.
Thunder God thought he was going to be rewarded for this effort, but instead, the Saint of Nine Heavens tells him about a promise he made to the kid, that he will come forward to help the kid if he faces any difficulties.
When Thunder God ( Ronald Cheng), who known for his cleverness, submits his proposal to the Jade Emperor, Thunder God's girlfriend, the Saint of Nine Heavens (Mia Yam), reveals that thirty years ago, Thunder God once descended to Earth and helped a chubby boy named Ding Don, helping him stay on the right path and not go astray. The Jade Emperor (Patrick Dunn) is offering a reward for a proposal plan to promote the economy of Heaven.