Roof rot and contamination

There was a large house, filled with people, high ceilings, and it was night. The roof, where the attic lay, contained shelves upon shelves of old luggage and personal belongings-- treasures. It was rotten and about to collapse. A call was made to a team of experts, similar to ghost hunters, who could sniff out exactly what was wrong and how to fix it. They were so good that even handing them a few blades of grass from your lawn would tell them what was happening. Roof rot, they said, and put their plan into action. The scene changes and there is an attic made of exposed wood where the entire team lives. The space is divided by partitions so that each member has their own nook for their bed and for privacy. It resembles a dorm in a way and is occupied by men only. The scene goes to a group of people driving in a vintage convertible, a woman driving, and as crazy as this may sound joined by a chimpanzee. It is still night and they pull up to this open sandy location with ruins of concrete and metal, lit up by a bright artificial light, and situated besides a dark shallow lake. The driver gets out of the car, crosses the highway and enters into the sandy space. There are a few people lurking about, but she approaches the lake and takes out a net. She scoops into the lake and pulls out an tiny alligator, followed by a large rattlesnake that hisses as it is pulled above the water. This creates a panic because she realizes that there has been some sort of contamination. She searches in the sand around her looking for clues. A large red sign is uncovered that reveals that this place was once a gas station-- but the sign also reveals a contamination that happened many years ago: beware of multiplying animals, it read. She runs to her team and explains the situation. They are all very worried and she runs to her car, starts the engine, and notices a rooster coming after her. The contamination is spreading. It's all very sci-fi.