Mashiro, the daughter of a major food company president, was secretly active as a Vtuber with a "Mesugaki" (bratty girl) character—the polar opposite of herself—to change her introverted nature and become independent from her father. However, her subscriber count just wouldn't grow... Then one day, a new maid named Kozue arrives at the mansion where Mashiro lives. The days of being "overrun" by the mysterious and skilled cook Kozue’s "forbidden" late-night snacks begin now!