Chemistry is basically a story of chemistry teacher, Waqar and hi two students, Ramis and Rania. Waqar is married, but his wife doesn’t have ability to give him a child. Waqar becomes interested in Rania and decided to break his relation with his wife. In the meantime, Ramis gets married with Rania as both love each other. After many ups and downs, Waqar made Ramis to divorce her wife Rania. Waqar gets married with Rania and when she comes to know that he was the reason why he got divorce from Remis. She got after knowing all the truth and suffered through throat cancer, which was later cured by the Remis.