Diya Aur Baati Hum's July 13th episode: Sandhya feels sad as it is her last day with the family before joining the final step of the mission. Sooraj tells her that Bhabho and he are going to see an uncle who is seriously ill. He also tells her the name of the train. Sandhya is shocked to know that it is the same train which has been chosen for the police operation.
Sandhya becomes scared as she knows that there will be a blast in the train as per the plan of the police department. She tries to stop Bhabho and Sooraj from boarding the train, but she fails.
Sandhya informs her boss. The boss says that only three compartments have been chosen for the operation and these compartments will be filled up with policemen only. The rest of the compartments will be absolutely safe and no civilian will be harmed in the operation.
Sandhya remains sad and scared. Sooraj tries to elevate her mood; he says that their companionship is never to end. After Bhabho and Sooraj leave the house, Sandhya tells Meenakshi and Emily to take care of the family. They are surprised at Sandhya’s behavior and ask whether she is going somewhere. Sandhya cannot reveal anything; she just says that she is going to her duty as usual.
Finally, the moment comes when Sandhya has to leave for the mission. She is determined to dedicate her life in the service of the country, still she feels sad to leave her home. She prays to God for her safe return.