Keima explains to the audience how he has captured fourteen girls and two unique girls after the last season. Meanwhile, Kanon is preparing for her school tests, but ends up talking with her split personality, Apollo, who claims to be a goddess. The next day, Keima and Elsie meet up with Tenri and within her, Diana. Diana wants Keima to marry Tenri as Tenri's love for Keima increases her powers, which he refuses. When asked to explain what she is, Diana reveals she is a goddess, one of the Jupit
Apollo casts a warning in the sky to her sisters to trust no one before succumbing to her wounds. Lune attempts to finish her but is stopped by Nikaidō. Keima, Diana, Elsie and Haqua have Apollo taken to the Katsuragi household where they discover the magic dagger used on Apollo and Kanon is ancient Weiss magic and the culprits are Vintage, a group of demons who wish to resurrect the Weiss. With Kanon having a week to live, Keima must find the other four goddesses to heal her before Vintage gets
Keima plans to spend an hour each with the girls to raise their affection for him without any of them encountering each other with Haqua's help. He manages to succeed with Tsukiyo on the bus but compilations occur when the 2B-Pencils finish band practice early which leaves Haqua with Chihiro. As a result, he misses Yui but continues by walking home with Ayumi and Miyako. Unfortunately, Haqua and Chihiro are heading in the same direction which prompts him to take Ayumi and Miyako inside the mall.
Keima arrives at the library whereupon Shiori allows him to read her story while being watched. Meanwhile, Nora discovers Kanon and demands Haqua an explanation. In the library Keima discovers that Luna, Tsukiyo's doll, is Vulcanus who warns Keima never to approach Tsukiyo again. Attempting to stop Vulcanus from being discovered, he approaches Tsukiyo not realizing she is in fact truly Vulcanus controlling objects. With both Vulcanus and Tsukiyo mad at Keima for cheating on her, he makes Tsukiyo
Keima sends Tsukiyo home warning Vulcanus not to reveal herself while he searches for the other goddesses. Unexpectedly, Yui has come to Keima's home to ask him out. Keima explains to Haqua he must now conquer Yui before Vintage realizes she has a goddess. The next day, Keima crossdress as a girl which gains Yui interest to awaken her past memories while unknowingly being overseen by Shiori. After Keima asks her out for a date, the goddess Mars finally awakens inside of Yui. As the crossdressing
Shiori is having trouble finishing her novel for the Mai High Festival due to her conflicting feelings for Keima. She then notices a young girl, who is actually her goddess, and chases after only to meet up with a crossdressing Keima. As she inquires his crossdressing and eat at a Ramen shop, Shiori tells Keima that she wants to make a story of him. Keima explains to Haqua that with Shiori's boosted confidence after their talk, she can now finish writing her novel. But the next day, Shiori is su
Keima gets sick from a cold so Nora's partner Ryo is ordered to watch over him. With two targets left, Keima decides to use his cold to get Ayumi to visit him by calling her while he calls Chihiro not to come so both of them won't visit at the same time. At his home, Ayumi decides to stay to take care of Keima after seeing him sick. Just when things were going according to his plan, Chihiro unexpectedly visits no thanks to Ryo letting her in. With no choice, Keima hides Ayumi under his bed as Ch
While attending a meeting between the section chiefs in New Hell, Haqua questions Dokuro Skull if Vintage have infiltrated the spirit hunters which the latter denies. However, Haqua is arrested by Public Safety which she later learns to her shock from Nora that Vintage have also infiltrated the highers ups and Dokuro Skull was the one who ordered her arrest. Back at Earth, Keima gathers all the awakened goddesses at his house in order to undo the spell casted on Kanon and awaken Apollo. During t
Chihiro and Keima head to the rooftop to continue their date. As they are about to kiss, Chihiro asks him to be gentle as this is her first time, which leads Keima to realize that Chihiro doesn't have a goddess as she does not remember her first kiss with him.
Ayumi is still angry with Keima but is forced to work with him after he becomes the 2-B Class Cafe barista. Keima tries to talk with Ayumi but her anger and Chihiro being there doesn't help. Meanwhile, Lune orders Vintage to target all of Keima's past conquests.
As Ayumi contemplates on what Keima said to her, Keima ask her to meet him at Kozue River. Haqua explains to Chihiro why Keima has to make Ayumi fall in love with him as he tries to make her like him again. However, their date is constantly interrupted by Vintage which Chihiro suggests she, Keima and Ayumi stay at Miyako's home.
As they head to Ayumi's location, Chihiro tells Keima he should tell the truth to Ayumi as unknown to Keima, she already told Ayumi that he was trying to win her heart for something important. At the harbor, Keima tell Ayumi he will honestly tell the truth if she ask anything before continuing their wedding.