What happens next in this paragraph?

The other side of the building appears with large words across it saying details and the workers begin waxing the cars and cleaning underneath the hood. when
I. the car is all cleaned, the man and crew of the department cleans the windows and roof of the second car that uses fire power. II. complete, a few words come across the screen with the business' location and their logo. III. the boys are done they walk out, and one of the men puts a mouthwash and a length of cloth on then one of them walks down with his helmet on. IV. the process is complete, all the cars are cleaned and waxed while each of the employees and some of the cars are shown driving drunk.
II.