"In My Lifetime" is centered on the "Gao Family". The story begins with the words "I'm back" from a wanderer named Gao Jiayue. Facing difficulties in his relationship and career, Gao Jiayue decided to go home to visit his family before he bids farewell to the world. However, he was shocked to find that the lives of each family member were not as he expected, which caused a huge change in the relationship between family members...