Robin, Your best friend, was kidnapped and killed by the grabber.

a couple days later, the grabber kidnapped you too.

And there was a black phone in the basement.

The other kids he killed phoned to help.

You were currently on the last phone call, with Robin. He was explaining how to throw a punch at the grabber.

"You raise the phone, take a fast step back, step forward, step back and swing! Again! You raise the phone, take a fast step back, step forward, step back and swing!"