One special night , whilst Sarah cooking a huge dinner with help of her kids. " Mom? " Ron called her. Sarah turned to her ten year old son and nodded " yes , honey " " This day every year, you make lots of food which are dad's favorites. What's special about today ? " Ron asked his mom. " and also both grandpa and grandma come for dinner. What happened today? why is it's so special? " Sana ,her seven year old daughter added. Sarah looked proudly at her smart kids and answered " today was the day your dad and me happened ". There starts her story.......