Four vegans arrive in Merthyr Tydfil to spread their message. Although they share the same goal, it soon becomes clear that their approaches are very different.

A bodybuilding vegan arrives to help spread the message around Merthyr, and the group up the ante by attending a slaughterhouse vigil.

In the final episode, the vegans tackle their most ambitious task – a vegan take-over at the college – joined by Matt Pritchard. Have they done enough to leave a lasting legacy?