A man wanted to go back to the past to correct mistakes he had made, so he designed a time machine to go back to certain times, but he did not succeed in any of the three attempts that set the time.
The machine was on her, and then what happened to him after that was out of time, but... his wife woke him up to find that what was in him was nothing but a small dream being his subconscious mind because of his conversation with his psychiatrist friend about the past and its mistakes