Contractors is a very unusual story about Nigar and Rashid, an elderly couple, who live with Sara as their tenant. Unbeknownst to Sara, her tragedy is linked to Rashid and Nigar, for which they blame themselves. This guilt compels them to care for Sara deeply and treat her as their child. Desiring to study abroad, Sara is promised support by Rashid and Nigar. However, they conceal their true profession as contract killers. They accept one final contract from Badar, a retired government official, to fund Sara's education. However, this last assignment proves to be their most challenging yet, with Sara also starting to doubt them.