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The video starts by showing us a old woman at what seems to be a train station with a vending machine with one candy pack left. The old woman buys the candy but it gets stuck because of the glass. After a few attempts of making it fall, it did.
a bit later we see the lady eating the candy at a bench outside the station. but we find out that its not her candy its infact its the teenagers right next to her. The woman only realises this when she boards the train and has to show the ticket to the ticket inspector after looking into her bag.