After an unsuccessful war spanning an extensive period between the four realms of Gamindustri (Planeptune, Lastation, Lowee, and Leanbox) over Share energy- the source of their power that is dependent on the faith of their people in the goddesses who govern them- each of the four CPUs finally signed a treaty of friendship. The aim of this treaty was to prohibit any military attempts to possess Share energy and bring prosperity and peace to their worlds. However, just a month after the agreement, Neptune- the CPU Goddess of Planeptune- chooses to procrastinate and play games instead of fulfilling her responsibilities, which results in a rapid decrease in Share culture in her region. Choujigen Game Neptune The Animation discloses Neptune and her friends' endeavors to escalate Shares while handling an imminent threat that could mean the end of the Goddesses and the Gamindustri universe itself.