A story about three people and how destiny brought them under one roof. Gustakh Dil portrays the life of Laajo, a simpleton from a village who is the other woman for her husband Nikhil. The husband continues to be madly in love with his childhood sweetheart Ishana. What happens when your husband becomes your best friend but his heart truly lies with someone else? A love story like no other, the wife is the third wheel in this saga of love. Will Laajo ever be truly accepted by her in-laws? Why is Lajoo the Other woman in her own marriage?