The makers of Khalifa marked Prithviraj Sukumaran's birthday with something that instantly caught the eye of Malayalam cinema fans. A one-minute glimpse video dropped online, setting the tone for what appears to be a globe-trotting action thriller with historical undercurrents. Directed by Vysakh, the film introduces Prithviraj as Aamir Ali, a gold smuggler whose story intertwines with a family legacy stretching back to India's most infamous era of contraband and crackdown.