The Pleasure Pit (1969)

Oliver is a rebellious socially-conscious young activist who despises overt materialism but dates a model. He tries to convince her to leave her materialistic, exploitative profession, but he can barely support himself, let alone someone else. That's when he decides to leave Paris where he lives with his mother to find his deadbeat dad who moved to Nepal some time ago and made good business as a professional hunter. Oliver wants to try to convince him to help him with his financial situation. Almost broke, Oliver manipulates his friend who works on a relief program in India to get the money to travel to Nepal. Once there, he's picked up by a band of hippies from Europe. One of them is Jane, a beautiful young carefree girl who practices free love. He falls for her immediately, but moves on, since he's not that anti-materialistic. When he finally finds his dad, he discovers that the man is actually almost broke and working for a sleazy businessman who deals in stolen artifacts. Oliver is forced to steal artifacts for him as well to support himself. On one mission he meets Jane again, now a total drug addict. His new mission becomes to save her, but she doesn't want to be saved. Meanwhile, his dad is openly having an affair with the sleazy businessman's wife, further complicating things for Oliver and everyone involved.