40 Tuổi Đời kể về The story revolves around Yeung Chung-tak, who has dedicated twenty years of his life to the household electronics division of the family business, Yip Fook Trading. Unfortunately, as the business evolves, he realizes that his position as vice-manager is the furthest he can go, as outsiders cannot become part of the family business. Still, Chung-tak is content with his life, as his true focus has always been on his family. Chung-tak's happy marriage to his wife, Wong Oi-lin, is challenged when a switch of apartments and changes in the company bring unexpected crises into their lives. They have two daughters, and together, they strive to overcome the challenges and rescue their peaceful life. The story explores how Chung-tak confronts these trials and their outcome.
