The fourth episode of "Tales of Wedding Rings" revolves around Jade forbidding Satou from marrying Nef, prompting Alabaster to strategize a retreat. Their journey is urgent, as they aim to gather the remaining rings to counter the looming threat posed by the Abyss King's forces. Though hesitant, Satou follows Alabaster's logical advice.

The situation escalates when an Abyss Knight breaches the barrier, allowing his troops to invade. Jade attempts to fend off the attack but is clearly outmatched. Satou joins the fight alongside Alabaster, Marse, and the Elder, yet without the combined power of the rings, their efforts fall short.

Hime, feeling inadequate for failing to grant Satou enough power as the Ring King, seeks out Nef to explain the dire circumstances. She emphasizes that Satou's bravery stems not just from duty but also from his desire to protect Nef's homeland. Success, she argues, hinges on Nef accepting her ring and uniting with Satou.

Filled with determination, Hime and Nef charge into battle, wielding a colossal warhammer to shatter the petrification of Nef's parents, thereby freeing the Wind Rings. Nef's acceptance of the ring and subsequent union with Satou through a kiss amplifies Satou's power, enabling him to obliterate the minions and defeat the Abyss Knight.

Satou regains consciousness, surrounded by his new companions, including Nef's aunt Smaragdi, who had been enslaved by the Abyss King with a black Wind Ring. Satou's heroics inadvertently freed her from this bondage.

The episode also weaves personal bonds, unveiling a past relationship between Smaragdi and Alabaster, marked by the touching exchange of a necklace symbolizing their shared history.