"The World God Only Knows: Goddesses Arc" is the third season of the anime adaptation of Tamiki Wakaki's manga series, continuing the story of Keima Katsuragi, a high school student renowned for his unparalleled skills in dating simulation games. Known as the "God of Conquest," Keima is reluctantly drawn into a real-world mission by Elsie, a demon from Hell, to capture "runaway spirits" that hide within the hearts of unsuspecting girls. These spirits cause emotional instability, and Keima must make the girls fall in love with him to extract the spirits, a process referred to as "conquest."

In the Goddesses Arc, the narrative takes a more complex turn as Keima discovers the existence of ancient goddesses who have been fragmented and scattered across the world. These goddesses, once part of a powerful entity named Vintage, were sealed away long ago to prevent catastrophic consequences. However, their fragments have now reawakened and reside within the hearts of several girls Keima has previously conquered. The goddesses' presence complicates matters, as their powers are tied to the emotions of their hosts, and their awakening could destabilize both the human and demon worlds.

Keima's task becomes twofold: he must not only identify which girls harbor the goddess fragments but also protect them from the New Hell Demons, a rogue faction seeking to exploit the goddesses' power for their own gain. As the story progresses, Keima forms deeper connections with the girls, particularly Chihiro Kosaka, a classmate who harbors unresolved feelings for him. The arc explores themes of love, sacrifice, and the consequences of emotional bonds, as Keima grapples with the moral implications of his actions and the growing realization that his "conquests" have lasting effects on the girls' lives.

The main characters include Keima Katsuragi, whose pragmatic and detached demeanor is challenged by the emotional stakes of the goddesses' situation; Elsie, his loyal but clumsy demon partner; and Haqua, a more competent demon who assists Keima in his mission. The girls who host the goddess fragments, such as Tenri Ayukawa, Yui Goidou, and Kanon Nakagawa, play pivotal roles as their emotions and memories intertwine with the goddesses' powers. The arc builds toward a climactic confrontation with the New Hell Demons, culminating in a resolution that reshapes the relationships between Keima, the girls, and the supernatural forces at play.