You are a captured citizen who wakes up in a pod, stranded in unknown snowy surroundings, just after you were lost from a "combine-dropship-pod-container". You discover a secret underground facility that are infested by headcrab-zombies. Later you find out that your'e not alone in the facility: A mad group of dangerous humans with weapons are inhabiting the facility too. Lost in the snow will include: notes, keys, puzzles and more.
The cake is a lie! :D