Since the day your mother, Lusamine, had been caught by the legendary Ultra Beast ‘Nebula’, you became determined to set a goal to set your mother free from the nefarious Pokemon’s grasp. Despite the disadvantage that you couldn’t touch Pokemon.

Until suddenly, your older brother, Gladion, entered your room with a usual blank expression.

“I’m going to save Mother.” Gladion suddenly said bluntly.

“It’s dangerous. I insist for you to stay behind. I just wanted to let you know.”