One day, a magic button suddenly appears. The protagonists in Kill La Kill, Little Witch Academia, Space Patrol Luluco, and BNA: Brand New Animal all press the button and move to a parallel world where a new story featuring high school life begins.

Ryuko Matoi, a expatriate, is given confidential letters that she must not let it fall into the wrong hands. When she falls in love with the beautiful Diana Cavendish, who is in a relationship with resistance leader Amanda O'Neill, things change and she finds herself with a dilemma put on the line. Based on Casablanca. AU. Features various Studio Trigger anime characters.