I will give a short summary.
Aditya is a pilot belonging to a rich lawyer family in Mumbai, married to his childhood best friend Pooja. He hates his mom and dad because his dad had an extra marital affair and his mom still accepted him.
Zoya is married to a businessman Yash and is staying in Mussoorie. She married Yash against her father's wishes. Yash owns an event management company in Mumbai and stays in Mussoorie for 4 days and Mumbai for 3 days.
Pooja tells Adi she has to go to chennai for an exhibition. Adi is upset because it was Pooja's birthday the next day but Pooja promises him that she will be back before 12AM.
Yash also tells Zoya that he has to go to Mumbai for some urgent work but will return before 12AM to celebrate their wedding anniversary.
Aditya has to do an emergency landing in Dehradun due to bad weather. He goes to Mussoorie to buy a gift for Pooja and that's where Aditya and Zoya first meet each other.
Then they get to know that Pooja and Yash met with an accident and pass away. Both are shattered. But then they see Pooja and Yash holding each others hands. People around there start talking about Pooja and Yash affair.
Aditya believes in the affair but Zoya doesn't.
Zoya then comes to Mumbai to stay with her in-laws. Initially her in-laws don't accept her but when Yash's sister Mahi gets to know Zoya is the nominee of all properties of Yash, she keeps her at her home to fool her and take away all the property.
Aditya finds out that Pooja had invested 5 crores in Yash's company. He then calls himself owner of Yash's company ZoSh and tells Zoya that he will not leave the company until Zoya returns him his 5 crores.
After lot of incidents, finally Aditya and Zoya get divorce papers which their spouses had filed for. Zoya finally realizes she was fooled and betrayed by Yash. Unable to bear the betrayal, she attempts suicide but Aditya saves her.
Aditya then decides that he will forget his past and move on with Zoya by getting her out of depression.
When Aditya realized Mahi sent goons to harm Zoya, he befriends her to stop her from harming Zoya and also so that Zoya also starts reacting and try to forget Yash.
So now Yash's company is bankrupt and AdiYa have to find out ways to save his company.