Subaru and the others celebrate their victory over the White Whale. However, all of a sudden Rem's entire existence becomes erased again, leading a despondent Subaru to figure out what happened.
Subaru and Emilia return home, only to discover that the village is empty and Roswaal gone. To find their friends and save Rem, the two head off to the mysterious Sanctuary.
Subaru understands something about his ability 'Return by Death' that he never considered. He gets invited to another tea party with Echidna where he uncovers some important things about her.
With Regulus's sudden and unexpected appearance, the safety of the seal is in question. Forutuna and Geuse fight against the oncoming threat. Meanwhile, outside the trial, Subaru and company receive a shocking revelation.
Upon reaching at the seal, Emilia was surprised to see Pandora already waiting for her arrival. Pandora offers Emilia salvation of the forest, but the cost is breaking her promise to Mother Fortuna.
Subaru, now armed with the knowledge of the events that led to Sanctuary's creation and the support his allies, once again faces off against Roswaal as Sanctuary's past is revealed.
After facing off against Roswaal, Subaru heads to Roswaal's mansion along with Garfiel and Otto. Meanwhile, Ram has a long conversation with Emilia and she requests her to do a favor for her.
Garfiel faces off against Elsa, Ram and Puck faces off against Roswaal, Subaru confronts Beatrice, and Emilia confronts her second trial. Each have their own duty that they must complete.
Garfiel and Frederica continue their fight with Elsa and Meili while Subaru, Otto, and Petra are trying to take down the Guiltylowe, in the meantime, Ram and Puck are fighting Roswaal, and Emilia is facing the third trial.
