We were 7 friends but when we left school some got separated and the others try to hold on but suddenly one of us decided to disappear. She left each us a letter with strict rules before opening it. First we had to go back to our high school and further we read the furthest we became more absorbed in reminiscence; it's now a walk down Memory Lane where all the six , with their own problems, will learn more about their future but will also learn not to regret each second in your life .