Sidewalls follows the lives of two individuals living in Buenos Aires who are struggling with loneliness and finding meaningful connections in a modern, technology-driven world. The movie explores themes of love, isolation, and the impact of urban surroundings on human relationships.

Are words, photographs and speeches sufficient means for describing and communicating a complex, harsh, unmanageable reality? These unsolved questions pursue Cassandra during her trip through the impenetrable Chaco as chronicler of a means of communication, her first job after graduating from literature school. The unknown reality of native peoples who live in the Chaco communities, their beautiful and uncomprehensive languages and their dilemmas facing an economy which excludes them, are part of a trip in which Cassandra finds an inhabitable world within her status as foreigner. Her visions start merging with the cosmovision of ancient inhabitants until she becomes part of the enigma herself.

Taking a breather from the crisis of her marriage, a surgeon named Celina visits the country house of an old friend who she hasn't seen since their university days. When she gets there, she realizes that something is going on with Paula, her friend's step daughter. Soon she learns that Paula attempted suicide, but Celina is in no shape to help anyone, because she is fleeing a dark secret of her own and has come to the worst place of all possible places to save herself. In the limbo of this hellish little town, her ghosts are reborn, infecting everyone around her...