Due to a twist of fate, rich boy Ding Sheung Wong (Roger Kwok) and poor orphan Bao Kai Chung (Raymond Cho) have their identities swapped over.

In the early republican days, Wong was originally the only son and heir of Bao Hing Fung (Yuen Wah), but because his first wife was jealous, she sent away his mother who was pregnant with him at the time. Bao Tai Fu (Lee Shing Cheung) had his eye on his uncle Fung's wealth, and to ensure that he would inherit this wealth, he decided to get rid of the mother and child. Wong's mother was murdered and Wong was beaten until he lost all his memories, Fu then found orphan boy Chung to take on the identity of the Bao descendant. Although Wong survived his ordeal, he was left with the intelligence of a seven or eight year old child and ended up in the Woo Lung Village and is accepted by Mi Chu Lin (Lo Yuen Yan) as her long lost son.

Lau Seung Seung (Rebecca Chan) and Lin had agreed an arranged marriage between their children and Wong should have married Seung's daughter, but instead Seung married him to her stepdaughter Ling Choi Fung (Jessica Hsuan) and instead married her daughter Ling Choi Dip (Tong Ling) to Chung. In fact, before he lost his memory, Wong had already been engaged to Yeung Pui Kwan (Winnie Yeung), when Wong disappeared, Kwan had searched for him endlessly and at last managed to find him and get close to him. With Wong caught up between Fung and Kwan, the two realise that there is something strange about Wong's background and together they work to investigate the truth and help him to regain his memories. Will Chung be able to continue living as the rich son? Will the foolish Wong be reunited with his father Master Bao? Faced with a new love and an old flame, will Wong be able to have a happy family and marriage?