Go inside CJ's house where you see the red marker upstairs or downstairs. One from the tops is the dream house. One at the bottom is the Mountains. Walk there and you'll see
want happens.

? in CJ's house will tell you on the radar.

If you see weapons, walk near it and press enter to take ammo and armours, this also work with player 2.

There's is a long journey down there to the forest. ...start from the very top of the maintains to go to your dream house. 