India, April 30 -- People who overcome odds make for compelling stories, but rarely do they emerge from the rough and tumble of lives of Class IV civic employees.

One such tale of grit and determination, backed by mentorship, has made its way to the silver screen.

In June 2017, 23 Class IV Brihanmumbai Municipal Corporation (BMC) workers-sweepers, manhole cleaners, road and pipeline repairmen, and water department labourers - between ages of 30 and 50 who toiled through the day and attended night school successfully cleared their SSC exam. Twenty one men and two women achieved this feat, backed by then assistant commissioner Udaykumar Shiroorkar.

The story inspired a Marathi film 'Aata Thambaycha Nai', which is releasing on May 1, with...