The documentary shows Attenborough searching for the identities of preserved creatures inside a piece of Baltic amber that was given to him by his adoptive sister when he was twelve years old. It then shows how a group of scientists can reconstruct an entire twenty million year old ecosystem through pieces of Dominican amber. Examples include a tadpole preserved in amber after falling from a Bromeliad.
Attenborough then discusses the scientific feasibility of DNA being preserved in amber, and the science behind the 1993 hit techno-thriller Jurassic Park, in which his elder brother Richard Attenborough starred as John Hammond. Several attempts were tried, with DNA eventually being recovered from a weevil that was several million years older than Tyrannosaurus rex. Attenborough reasons that a few old, rare pieces of amber may contain DNA.