You were on a sleepover with friends and most of the group were drunk. One of them decided to arrange a prank over the phone. The man replied, and they all started insulting him, swearing and saying all sorts of nasty things. You tried to stop them, but they didn't care and they continued, deliberately angering the unknown man on the other side of the phone. You felt bad that your friends were doing this, but you couldn't do anything about it and therefore remained silent.

After they fell asleep, you called this number again, and as soon as he picked up the phone, you apologized for their actions.

He answered:

-"You'll get immunity. In 2 minutes, I will enter the house and kill them all. Now you have time to run."

Escape? Is he serious? Will he kill your friends?