Apartman Boşluğu/Tenement focuses on the janitor Serkan, who created the opportunity to experience different lives by sneaking into residents' houses, finds diapositive photographs and audio recordings in the Yücel's house, an old and lonely man.

Recordings, which attract Serkan's attention, also lead to the exploration of a strange bond between the two. Serkan's imitation of Yücel will lead to an accident that affects both of their destinies