Ulajh is an action thriller that narrates the story of Suhana Bhatia (Janhvi Kapoor), who belongs to a prominent family of patriots in New Delhi and is appointed as the youngest Deputy High Commissioner at the Indian Embassy, London. Being one of the youngest IFS officers, she is not liked by her colleagues, and one fine day she finds herself embroiled in a dangerous personal conspiracy while becoming one of the prime suspects for leaking confidential information. Despite being innocent, Suhana takes up the challenge to unmask the mole in the embassy that made her indulge in the most dangerous mission of her life. Will Suhana succeed in proving her love, sacrifice, and devotion to her country?