Thank You is a romantic comedy-drama that revolves around three friends Raj Malhotra (Bobby Deol), Vikram Chopra (Irrfan Khan), and Yogi Mathur (Suniel Shetty). The three friends are womanizers, who cheat their respective wives and sleep with other women. However, their carefree lives come to an end, when their wives hire a private detective, Kishan Khurana (Akshay Kumar), to spy on their husbands and catch them red-handed. On knowing that their wives have hired a private detective, the three husbands try to be smarter than him while proving their innocence time and again. Will Kishan manage to catch them red-handed or not, will the three husbands mend their ways, forms the remaining part of this interesting comedy drama.