Mélodi returns to her province with the assignment of writing her second book. The first one, about unsolved homicides in the area, was a bestseller and she is still looking for a reassembly after so much exposure. But with a little problem after that experience, her interest in murder cases ceased to make sense for her and since then, she has only been able to write a few poems, something that, as we all know, has no commercial value. But a case awakens her interest: two young men who disappeared some time ago without a trace in the zone of the Paraná islands. The boat they used to carry tourists was found sailing alone downriver with all their belongings intact and with no signs that anyone else had boarded the boat. The clues are erratic but different versions of the myth persist among the inhabitants of the coast. Some speak of a secret love story, and songs have even been composed about it. Others mention a legend that would explain, at least symbolically, the disappearance of chamamé singers that every now and then the river takes to the depths. There are also versions that link it to extraterrestrial abductions, due to the great influence that this type of phenomena has in the area. Others say that they are alive in the woods, although they do not explain why. Mélodi is intuitively guided throughout her investigation by signs, especially musical ones, together with Joaquín, a young taxi driver with a passion for cars and speed.