A workaholic mathematics professor, Jai (Siddharth Malhotra) who aspires to fulfil his dreams, but life takes a turn when his long time girlfriend, Diya (Katrina Kaif) proposes him for marriage. After consuming alcohol, Jai falls asleep and finds himself trapped as he travels to diverse portions of his life, unintentionally. Will Jai understand the importance of balance between work and family?