George Lamb sets out to find out whether legal highs, the party pills, powders and herbal blends sold openly in UK shops and online, deserve their reputation as a safer alternative to banned drugs. He talks to regular users about why they choose these substances over street drugs, sits down with a seller who explains how the products stay a step ahead of the law, and interviews a doctor who argues that some legal highs carry more risk than class A drugs like cocaine or heroin. Lamb travels to Guernsey, where he finds that most of the young people he meets have already tried one, a detail that suggests how normal these substances have become outside the big cities. The film does not stop at secondhand accounts: Lamb tries one himself and reports what happens. Legal status turns out to say nothing about safety, and the film leaves that gap, between what the law permits and what the body can handle, as the open question for the viewer to weigh.