Wpc Sophia and pcso Dynamo get gunged and dunked whilst inspecting the new Police interogation equipment--a Gunge Tank! Wpc Sophia orders Dynamo into the new overhead gunge tank so it can be tested. Dynamo soon gets gunged all over ensuring her hat is full of gung which she then puts back on her head. pcso Dynamo then tricks bossy Wpc Sophia to get into the Gunge Tank and releases all the gunge onto Wpc Sophia who also lets her hat fill up full of gunge. The girls then move onto the dun tank which is then tested by both girls being dunked. To round off, Wpc Sophia and pcso Dynamo decide to test their uniforms. The uniforms don't apear to be very strong and the girls soon rip the blouses to shreds and the rest of the uniform is soon removed. The girls are then left to say goodbye completely naked apart from their hats.