In this final episode, Iolo is exploring the dramatic Stackpole Estate in Pembrokeshire. Iolo goes underwater in the Bosherston Lily Ponds to try and find pike, has a wonderful time spotting otters in the rain and gets a glimpse into the nightlife of the old estate buildings where a large breeding colony of greater horseshoe bats can be found.

Iolo Williams explores Singleton Park in Swansea. Iolo discovers the wilder side of this urban park when he tries to track down foxes and an elusive parakeet, carries out an experiment on a pair of nest-building long-tailed tits, investigates what the local peregrine has been eating and finds out about the many different types of insects living in the colourful botanical gardens.

Wepre Park is nestled amongst the urban sprawl alongside the Dee estuary in North East Wales. Seeking out the park's wilder side, Iolo Williams tracks down badgers, heads out with wardens as they survey for rare great crested newts, comes within centimetres of a wood mouse and finds a scary-looking giant wood wasp amongst a log pile. It's an important park for the people to enjoy the outdoors, with areas of ancient forest, brooks, ponds and open spaces.