Premise: A new timeline. Homura chases Kyuubey and meets Mami in Gertrude's lair. She decides to start a magical girl duo with Mami rather than let her endanger Sayaka and Madoka. Mami and Homura begin hunting witches together, but Kyuubey is continuing to hound Madoka. Homura kills Kyuubey, but of course he does come back.
However, as a consequence of Kyuubey bothering Madoka so much, she is interested in becoming a magical girl. She visits Mami and Homura for tea often, and Mami really wants her to stay involved. Homura brings up Walpurgisnaucht and asks Kyuubey to convince Kyouko to come help fight it. Mami wonders how Homura knows about Kyouko.
Kyouko comes, and Kyuubey tells her that Homura has been trying to kill him. He presents the same theory as in the anime timeline: Homura doesn't want new magical girls to contract. He wonders if she is trying to kill all of the competition for Mitakihara Town. Kyouko is worried about Mami being tricked by Homura and confronts her on it while they're hunting witches. Mami tries to break up the fighting. They're distracted and get attacked, so Homura stops time to move Kyouko. Kyouko is still mad at her and lets her hand go, getting stopped in time and killed when time resumes.
Mami is obviously really upset. She wasn't involved in the time stopping and thinks Homura killed Kyouko. She tries to attack Homura, forcing her to kill Mami. When she returns from the lair, Homura is very upset. She pushes Madoka's concerns away, not wanting for her to be endangered, and sets out to fight on her own.