The defenders investigate the tragic death of a Red Arrows pilot, and they smash a puppy-smuggling operation. A supermarket is fined £8 million after a massive fuel leak at one of its petrol stations has a devastating impact on the local community and environment.

The defenders investigate the tragic death of a seven-year-old girl when the bouncy castle she was playing on was swept away by a gust of wind. And they enlist the help of football superstar Wayne Rooney as they chase down a couple making a fortune out of fake football memorabilia.