In the early 1990s in the fictitious town of San Gregorio, Mexico, Dani, a high-school senior, forms an unlikely alliance with Victoria, Olivia and Tamara to find out what happened to Lorena, who has mysteriously disappeared.
Dani doesn't buy the official version of what happened at the library, so she convinces the other girls to do their own research on it. Olivia transcribes Lorena's diary and is worried by what she finds.
