Three teenage friends, between bike rides, boring classes and days at the swimming pool, trigger a strong and different attraction between two of them that they did not feel before. Maybe it will be the last summer of their childhood, maybe it will be the last summer of the three of them together.

X arrives in a small town and witnesses a violent act; Z takes the job of a dead manager and discovers that he had a notebook written in code and a map; H is hired to go down a river and investigate a series of mysterious monoliths built on the shore.

One night an uninspired writer selling to walk around Buenos Aires. Find a package in the trash. From there on, what we are going to achieve. His eagerness to preserve and hide it will transform his days and nights into a strange nightmare.