David discovers the plants that have evolved to shed their dependency on water enabling them to survive in the driest environments. The story begins at midnight in midsummer as David steps into the Princess of Wales Conservatory to witness the extraordinary nocturnal blooming of a cactus. The Queen of the Night, with its giant flowers, is the centre piece of a stunning symphony of cacti blooms that burst open in the desert (and at Kew) at night. In a mesmerizing 3D slow motion sequence, we discover the extraordinary connections between cacti and their natural pollinators: bats. The scene typifies the unique splendour of the 3D experience as bats seem to fly out of the screen and into the viewers' living room. As the sun rises, David meets other amazing plants. Species like the Century Agave, which grows steadily for over 50 years, only to then flower itself to death with one mighty telegraph pole sized bloom which literally bursts out of the roof of Kew's green house. Cracking the code to plants' survival strategies is the key to protecting their future and Kew have built a high tech long-term solution fifty miles south of the Gardens. Described as mankind's ultimate insurance policy, and with 10% already cryogenically housed, the Kew Millennium Seedbank has the capacity to store seeds from every remaining species of plant on the planet, thus ensuring that no plant need ever go extinct again.