Doctor Reynolds has lived in an alcoholic fog since the accidental death of his wife a year earlier. He was once a renowned research scientist and accomplished professional at Harwell in Oxfordshire, but he now lives as a recluse, with the exception of one colleague who remains a trusted friend. One night, a small meteorite crashes into his garden, evoking his curiosity. Upon closer inspection, he discovers the rock contains genetic material to create a living form,a messenger from another galaxy. He cultures the material in his bath tub, but strange incidents start to happen.