When fate brings Belfast teacher JJ into the orbit of self-confessed 'low life scum' Naoise and Liam Og, the needle drops on a hip hop act like no other. Rapping in their native Irish, they lead a movement to save their mother tongue.
A single mother living in the Irish countryside with her son begins to suspect he may not be her son at all, and fears his increasingly disturbing behavior is linked to a mysterious sinkhole in the forest behind their house.