When Dan, Tim and fred, three naïve hippies, set off from London to Kathmandu with few funds and a dodgy bus, a drug deal in Pakistan seems like the most common sense way to make the journey pay. But the mountains of the Hindu Kush, a mysterious Frenchman, a set of lranian Siamese Twins cum nightclub singers, spear wielding holyman and, yes, more drugs, soon throw deadly spanners in the works; the money is lost and the big score turns to disaster.
25 years later, and the former hippies are lured back to Kathmandu to collect their share of the money. The Hippy Trail has long gone cold and only the help of Dan's offspring, a tattooed lady and a Tibetan sage can unravel the mystery of their misspent youths.