You get $500 million but once a month some demon or monster will randomly be looking for you.

Randomly each month, a monster/demon will be searching for you. You know that demon is looking for you when the sky turns red (only you can see the sky turns red). That's the signal that it's coming. You have one hour to find a room and lock yourself in. If you find a room, lock the door and close the blinds then you're safe. That's the only safe place when it's searching for you.

For example, say you're at work and you see the sky turn red. You have one hour to find a room. Like you should stop what you're doing and drive home or to a hotel room or something. And then lock yourself in that room.

You know you're safe when the sky turns back to normal. It could be red for one hour or even days. As long as the sky is red, stay in your room. The monster might be banging on your door, screaming. But don't worry, it can't get in if you lock the door and close the blinds. Whatever you do, don't open the door as long as the sky is red. It might knock on your door and pretend to be someone you know. It can change it's voice. But again, don't open the door for anyone as long as the sky's red.

Would you take this offer?