Tony Robinson and the Team get their feet wet as they examine a stretch of the River Tees where local divers have discovered more than 2,000 high-quality Roman finds. The river flows past one of the most impressive Roman forts in northern Britain, and over three days the archaeologists cast their net far and wide investigating the buildings, roads and structures around this strategic crossing. However, the big challenge is working out what was going on in the middle of the river, where most of the finds came from, and that means a variety of Time Team's finest squeezing into wetsuits and braving the fast flowing river Tees.