After losing her father, in a bid to escape the clutches of her stepmother and an enforced marriage, Chandni runs away from her palatial home. She meets the helpful but deliriously sexy Steve on the train she boards while escaping to Mumbai from Kolkata. As they undertake a journey of a lifetime together, a lot of twists, tragedies, and laughs await them. By the time they reach Mumbai, they mutually decide to part ways and promise to not stay in touch. Will they be able to keep that promise though?