Gold medal e-sports player Cen Xiao accidentally entered the palace and became Cen Zhen, the unpopular concubine of the Hou family. She originally wanted to live a low-key life, but she was forced to be involved in the plot of her aunt and sisters because of a 'pot gambling' at a banquet at the house. Cen Xiao relies on his e-sports tactical thinking to regard the house fight as a multi-player battle: he recruits the loyal dog guard Pei Heng as his ally, and uses map positioning and teamwork to fight back against frame-ups. Pei Heng was originally a taciturn secret guard, but he gradually became more sincere because of Cen Xiao's "alternative command". The two joined forces and turned the internal fighting within the house into one 'e-sports competition' after another. In the end, they not only defended themselves, but also uncovered the business war conspiracy behind the Hou Mansion.
