A group of twenty-some year-olds love spending their time going to nightclubs, going on mutual vacations, as well as snorkeling adventures. Suddenly, one of the friends dies, leaving the rest of the friends clueless. In addition, the surviving friends discover red scratches on their bodies, mystifying everyone. It seems as though someone wants to get everyone?s blood type. All of the sudden, a fun and relaxing trip to a lake in Poland becomes an enduring journey of survival. This psychological thriller teases the senses.