Jai, an unemployed drunk, gives false testimony that puts an innocent man in jail for murder. However, he later relents and tries to exonerate him by searching for the real killer.

Two crooks accidentally kill a man and decide to inform his parents about the bad news. However, once they meet the family, they end up lying to them.

Set in the Chambal region of Madhya Pradesh, 12th Fail begins in 1997 with a young Manoj Kumar Sharma preparing for his Class 12 board exams.

Ruhaan Randhawa, a carefree travel enthusiast, crosses paths with Reet Rathore. Reet is returning home to Bhawanigarh, Rajasthan, to sort out family arrangements, but after a bus accident leaves her presumed dead, she decides to hide out in her family's abandoned ancestral mansion.

Set in the 1970s and early 1980s, the story follows Rocky (Yash), a young boy born into extreme poverty who moves to Bombay as a child with a fierce ambition to die as the richest and most powerful man, fulfilling a dying promise to his mother.

Raj Malhotra, a wealthy man, falls in love with Priya Bhatia, a real estate agent, as soon as he meets her. When he proposes to her for marriage, he discovers that she is already married.

Sobhanadri, a criminal leader, adopts an orphan Sivaji and raises him like his godson. Issues erupt when in order to teach his own son a lesson, he decides to grant his riches to Sivaji.

ACP Malvika Chauhan, a widowed mother, is assigned to investigate the murder of a businessman. However, she suspects it to be a serial killer as more murders take place in the city.