Crook tells the story of Jai (Emraan Hashmi), who has a knack of getting into trouble. His father was a gangster who wanted to reform, but was killed by the cops. When Jai grows up, Joseph (Gulshan Grover), a friend of his father, sends him to Australia - a land far away from his past.
Almost immediately after landing, Jai meets Suhani (Neha Sharma), an Indian Australian. Her elder brother Samarth (Arjan Bajwa) is convinced that Australians have a one-point agenda to bring Indians down. Jai finds accommodation with a group of youngsters (Mashhoor Amrohi).
Jai knows that if he can make Suhani fall in love with him, he could eventually attain permanent residency by marrying her. Jai also flirts with Nicole, the stripper from a strip club. However, her brother, Russel, is against Indians and attacks them for a reason. Jai had left India to lead a hassle free life, but finds himself in the heart of a racially disturbed city.