The photo shows four kids clinging on to Deol's arm.
"4 innocent kids... Against the most powerful man in the country.. Only 1 man stands between them..#ghayalonceagain," Deol posted on Twitter.
Besides starring in the lead role, the 58-year-old actor is also directing the action drama.
"Ghayal Once Again" also stars Om Puri and Soha Ali Khan. It is slated to release in January, 2016.