In 2019, Childhood Friends Yashio Kaito and Senomia Akio learn in high school. Together they are the only students of the robotics club, who lost the school financing. Akoso is passionate about robots and eager to complete the construction of a robot that his older sister Misaki began in the same club. Kaito really does not care about robots and obsessed with video games, especially "Kill Ballad Online". Nevertheless, he remains at the robotics club because of his friendship with Akoso. Now, immediately after Kayto is accused of deception in his beloved game, Akoso decides to risk the existence of his club in exchange for funding, to finally destroy the giant robot of his sister ...