A long time after a war triggered by robots using a mysterious energy called Overcharge, Jacob a 23 years old man receives a calling from “Voice” She become his guide and telling him to continue working on his Watermelon Cannon that it’s key to stop the robot Invasion, Jacob discovers the Overcharge energy and he awakens it for its cannon Jacob, his cannon and Voice explores differents zones seeking out the origins of the Overcharge and the way to stop the invation, On their way both face differents enemies and challenges making steps further to seek the truth about their world

Join Jacob and his Watermelon Cannon on an adventure against robots to save his home and uncover the secrets of a mysterious energy called "Overcharge." Play multi-round PvE battles, choosing your skills and upgrades that will progress through the story. Spend time with your allies in a visual novel format and strengthen your relationships to unlock PvE combat improvements.