Key Lost During Training

One summer day in the afternoon, a man called Michael and his dog named shadow were going to a park in singapore. On their way they had to cross a bridge to go to the park.
When they arrived at the park, there were some people training their dogs with a specialized coach. Then, Michael decided to join to train shadow.
While Michael was training shadow, suddenly he started to bark because of hunger. Michael was surprised and tried to stop shadow. At the same tine, he felt he dropped something but he didn`t care. Soon, he realized the matter of shadow and fed him. After feeding him, Shadow became quiet. After training, Michael and shadow decided to go back. On the way home, when they were crossing the bridge, Michael checked his pocket to take out the keys. However, he couldn`t find anything in his pocket. He panicked. He went to the park back and started to look for keys. After a long time he coudn`t find the keys and he panicked more. with a little hope, heasked many people if they have seen the key. An old man told michael that he had found the key but he gave strangers who asked him for the key. Michael realized his key was stolen

Finally, he changed the doorlock and got new keys.