Chemistry turns up everywhere in this final installment of a 31-part Open University series, from a Cambridge lab to a Delhi slum. Professor Steven Ley walks through his research on molecular compounds, describing one substance so strong that a single tablespoon would cover an area the size of two football pitches. The film moves to India, where Neem tree oil is examined for its medical uses, and to a slum district in Delhi where discarded equipment gets recycled into working chemistry teaching kits. Other segments cover a hibernating frog's chemical strategy for surviving freezing temperatures, the chemistry keeping astronauts alive in space, and the industrial synthesis of nitrates. The program also follows what happens to the body's chemistry after death, tracing the skeleton's slow changes, and looks at free radicals and their damage to the heart. Threaded through it all is the money side of chemistry, particularly in pharmaceuticals, and its uneasy double role in both peace and war.