[2] The story is set in the Argentine city of Córdoba and focuses on the lives of a group of trans women who work as street prostitutes at Sarmiento Park, among which is the narrator herself.

In October 2020, Las malas received the Sor Juana Inés de la Cruz Prize given by the Guadalajara International Book Fair.

The stories are about the difficulties that she encountered during her entire life as a transgender woman, but they are also about the lives of the group of sex workers (mostly fellow trans women) that she meets at Sarmiento Park.

Sosa Villada mentions topics such as differences among socioeconomic classes, the atrocities committed against trans women working in the streets, and the struggle that transgender children go through, among others.

Las Malas describes the oddities and the dreary realities trans people usually go through together with supernatural phenomena presented as fairy-tale-like segments disruptively.