2. The island paradise

Michael continues his adventure on the island of Palawan, where he explores the Puerto Princesa Subterranean River National Park, but discovers the environment is under serious threat from a huge nickel mine suspected of poisoning the area. He then flies to Cebu City, the oldest city in the Philippines, and visits its detention and rehabilitation centre, a large prison where he witnesses the dazzling, if bizarre, synchronised disco dance routine performed by hundreds of smiling inmates.

3. Mindanao

Under military escort Michael explores the ruins of the destroyed city of Marawi, and on Jolo he meets a member of the terrorist group Abu Sayyaf, in a region on the UK Foreign Office's "do not travel" red list.