You are controlling Hollyleaf. You can move her around by using the arrow keys. To access dens, simply approach them. Walk back to the exit of the den to leave them. Some of the dens are a little tricky to leave. If you're having trouble, try sharply turning left or right when in front of the exit, and that should be enough to get back outside again. The leader's den is accessed by approaching the rock slide and selecting 'Yes' in the message that appears. The game is a little glitchy. If you get stuck in a wall or object, tap 'T' on the keyboard to reposition yourself in the center of camp. I may add some dialogue later. For right now, clicking on characters will just result in them saying their name.
to Lightningstep36 for the original!