The strongest four-member team in the online game "Planet" travels the world under the name of "Akabane Family". They are like family in the game, but they never thought that they are actually blood-related family members, but their relationship is not harmonious: the elder brother stays at home all day, the younger brother is excellent in both character and study, the father is not respected by the children, and the mother does not care about the family. They do not understand the warmth of family affection, do not know that family affection in the virtual world is fleeting, and have never thought that they are a family in the real world. The story unfolds with the deeds of the "Akabane Family" in the online game "Planet", describing how they kill monsters, fight other guilds, and crack the conspiracy related to the ultimate goal of the game "Black Bird". Just when they are like fish in water, the game world is intertwined with real life and family entanglements, and the story takes a sharp turn for the worse.