Curtis MacKinnon is an intemperate, naive fool. Sure of his invunerability as an American expatriate, he comes to Borneo to play at being disreputable. His illusions and charm make him a dangerous man: soon enough, he is in trouble and forced to hide in the jungles of Kalimantan.

He discovers a drug once used by the Punan Dayak, a lost race remembered as 'the dream wanderers'. Seribu aso does not, however, alter the perceptions of onlythe user. It changes the concrete reality of the land itself. MacKinnon has awoken the spirits of Kalimantan, the guardians of an unspoilt land. And he has no idea how powerful they are.