Various shots of rat crouching on top of a kind of camera stand. Several CSs and MCSs of rats around a simulated sewerage getting close to it, in one shot, one rat is being put inside the drain pipe and kept there by someone holding cover at end of pipe so rat cannot escape. CSs of rat getting out of pipe by the other end, but still prisonner because of glass tube covering that end. Shot of rat swimming back in pipe and finally getting out from released end. Several CSs of rat swimming.