You're in one of the lower layers of the abyss. Suddenly- you fall and trip onto a ledge, you look around and notice there's to safe way to get off of it. You look around for a while- then you see two moving figures in the distance, and they see you, you don't know if their danger or not but you have to hope they aren't, you take out a small mirror and with the help of the sun- you shine some light at them and signal 'SOS' they under and have started to help you.