Malaysian tycoon Lei Ming (played by Raymond Wong) and his arch-enemy Yang Yawei (played by Eric Tsang) have been fighting for years, and this time they are going to fight to have a grandchild! Lei Ming learned that Yang Yawei was expecting his son Alex (played by Alex Lam) and daughter-in-law Shanshan (played by Karena Ng) to give birth to a grandson, and he was furious. He threatened his second-generation nephew Lei Daizi (played by Ronald Cheng) and his nephew's wife Xue'er (played by Fiona Sit) to continue the family line, otherwise he would stop providing living funds for the two. He also hired a superstar-level confinement woman Gong San (played by Sandra Ng) to strictly supervise them. Although it turned the couple's life upside down at first, it indirectly regained the long-lost passion and romance between the couple and launched a vivid "birth attack". Lei Ming was diagnosed with Alzheimer's disease. In order to fulfill his wish, Xue'er pretended to be pregnant and asked for help from the pregnant couple Dai Dai (played by Lynn Hung) and Xiu Bo (played by Yu Bo), hoping to use their son to hide it from her uncle. Unexpectedly, on the day of delivery, Yang Yawei showed up, and the big lie that everyone had carefully fabricated was about to be exposed...