Nigel Marven heads to China to learn about giant pandas. Nigel is determined to locate a wild panda den. As night falls, he sets up a trap for some winged beauties with a special connection to China - silk moths. Eventually, he finds the panda's den site - and there is a big surprise in store, as the team gains unique footage of a brown panda in the wild. Elsewhere, Nigel catches up with Chengdu's panda cubs and witnesses San Diego Zoo's baby panda venturing outside for the first time.