Things haven't changed much in Jackrabbit Junction. Well, there's the archeological dig going on a Ruby's old mine. There's the mayhem of all the visitors - some of whom need a good punch to the head, but you can't really do that.
Another sister in trouble, and a mother who can upset everyone just by being in the room, means the trailer is full and there's no where for Claire and Mac to get some privacy.
Building the new outhouse gives Claire a place to hide from her mother, and spy on the archeologists. ( )