Years before becoming the feared Dark Rose, Rosetta works with her elite assassin sisters, Rose and Rosa, for their powerful mafia father, Viktor Veyr. Episode 1 follows their luxurious early mission to eliminate a wealthy crime lord who betrayed the family and stole vital information, revealing their bond, skills, strict upbringing, and Rosetta’s ruthless edge when family is threatened. The cinematic futuristic anime crime thriller ends with Viktor learning that a mysterious organization is moving into their territory, setting up Episode 2.