Watch FilmoFlix. Big Deal follows two best friends, Casey and Sarah, on their quest to smoke weed before parting ways for university. In the spirit of making things up as they go along, the pair traverse the treacherous middle class streets of North West London to rendezvous with a peculiar dealer. As the night spirals, they question not only their friendship and the anxieties of growing up, but also, how do you actually roll a joint?