You both decide you've come this far, and nothing is going to scare
you out of the house. You hang on to the railing and slowly walk down
the stairs. As you near the bottom, you can hear water and right
before you step off of the last step, you realize you've come to an
underground river. Dave suggests that you just go back up and look
around the house some more, but the closet door above has shut and now
you have no choice but to jump into the river and see where it takes
you.