In 1916, laconic adventurer Corto Maltese is taking a siesta in Paramaribo, the capital of Dutch colony of Suriname. He`s also seeing some old friends there. Golden Mouth, a legendary local friendly mystical 200-year-old voodoo medium who looks like a beautiful young woman asks him to help Tristan, a young confused teenage gentleman who`s been led to her by voodoo spirits who`s been haunting him ever since he inherited the controlling interest in his father`s company. The other big shareholder, a sleazy lawyer, wants the company for himself, even if he has to kill Tristan to get it, and the spirits can`t let that happen for reasons of their own. Professor Jeremiah Steiner, once brilliant scholar and now a local drunk has-been who Corto saves from local thugs, befriends Corto and offers his help in deciphering a mysterious map left to Tristan by his secretive father that mentions the Aztec gods, a gate and the fictional lost continent of Mu.