Chris and Andy Smythe are ten year old twins. They live in a small village called Kingstanton in West Cornwall where they live with their mum & dad. It is the school summer holidays and the two brothers are hanging out with their friends Callum and Tom. Their days are spent building and riding go-carts and playing at the secret camp deep in the local woods. Strange happenings and discoveries! lead Chris and Andy and their dog Blackie, into their first of many adventures.