Bassist and co-founder of Busted Matt Willis opens up about his experiences battling drug and alcohol addiction and his daily struggle to stay clean and sober. He speaks on the constant fear of relapse and the pressure it puts on himself and his family. Matt looks back on his past and his darkest days, trying to get to the root of his addictions. He visits a rehab unit that made a real difference to his recovery to speak with experts about why he and fellow addicts become dependent on drugs and alcohol before travelling to Imperial College London to meet a research team who are studying the differences in the brains of people with addictions and people without.