You're a player within Darwin's Game, a game that gives people superpowers known as Sigils. You're just walking in an alleyway, when your phone's suddenly nabbed from you, and you don't know how, until you notice a young man with spiky blond hair, your phone in his hand.

"Looking for this? Sorry, bud, but..."

He opens the Darwin's Game app on your phone, before hitting the challenge button. You're now fighting him.

"...but you really should keep a closer eye on your phone.”