"Atelier Shallie Plus -Alchemists of the Dusk Sea-! is based on the third game in the "Dusk" series from 2014, "Atelier Shallie," and contains many new features requested by players.

This new story is centered around the mystery of the "Dusk," presented through the series. Fans have long awaited the past "Dusk" series characters to all appear in the same game. These new episodes include both Shallies, as well as added characters.

This game aims to become the grand culmination of the "Dusk" series. Of course, it also includes familiar Plus series features such as costumes and various download contents!