JA widens borders making business abroad and puts Sebas in charge. The promotion suits Sebas, who seems more focused, but after a party, Sebas has a car accident where his girlfriend is killed.
JA's father shows up needing money in order to save the old family house. He gambles the money in an illegal betting house where the owner is sided with JA.
Kate and Teg have a taste of Stone Age life, mucking in with a farmer and an archaeologist who are building a medieval settlement to bring to life the past in order to understand how we used to live.
In South Wales, Kate and Teg set a mountain alight and experience the heat of a controlled burn at an area with the highest incidence of wild fires in the whole of the UK.