Keima is back, and together with Elsie the hunt for loose souls continues on. This time however, they are joined by Elsie's friend and fellow Demon, Haqua.

Civil war in New Hell is threatened when the group Vintage attempts to release the group Weiss onto the Earth for the purpose of controlling souls. To counter this threat, Keima Katsuragi is conscripted into unsealing the five Jupiter sisters - the Goddesses who sacrificed themselves in order to seal Weiss.