Since Mariam resides in Aberdeen, she misses her grandparents very much! She gets more than excited and thrilled as she hears about them paying a visit to Aberdeen! Her family makes a list of marvelous plans for their visit - A sightseeing tour of London is also one of them! Filled with enthusiasm, Mariam tells everyone in her school about her grandparents visit. However, just one day before their date of arrival something terrible happens. Eventually, the whole family learns a valuable lesson.