When you get really tired of the dull classes in the school, it is the best part of the academical year when you have the opportunity to visit a factory, related to your studies. This semester your teacher have been invited to take part on a journey including inspecting one of the biggest steel factory of your country. He accepted the offer and on this particular day you found yourself listening to the lecture of the owner of the firm. Suddenly you heard noise coming from the direction of a storage where they kept the poisonous materials. Some of the workers got stuck inside and inhaled the toxic air which could be deadly in hours. You tried to release them but the door was jammed. Search for hidden objects around and figure out how they can be used to open the door and save their life. Have fun!