John Day is a bank manager of Royal Citizen Co-operative Bank and lives with his wife Maria Day. The couple has recently lost their only daughter in a forest fire accident while she was on a trip with her boyfriend. Maria is always depressed and never opens up with anyone. One day when John is away for office work, a courier-boy enters the house and takes Maria as a captive. He then calls up John informing him about his wife and tells him that a man will visit him at his bank and John has to do as per his directions. It's a planned bank heist where the visitor gag John and opens up the cash locker and fled, meanwhile the kidnapper hammered Maria causing her a serious brain damage. She gets admitted to the hospital in a state of coma. Will John be able to crack the investigation? Will he find the true culprit? Watch the movie John Day to know more.