Even when Ad and Fiktor were just tiny mice, Ad and his brother would play together and have loads of fun. As they grew older, Ad would study hard and get excellent grades. He also did a lot of extracurriculum activities. He learned how to swim (and even to rescue swim!) and he joined Scouting. He there learned how to build a safe fire (a skill he later passed on to his grand-nephew Archie), tie ropes, build a treehouse (this is when his love for architecture first surfaced) and lots of other things.
Fktor, who did not like to tire himself with books or tents, got more and more jealous. On the day that Ad received his life-guarding certificate, Fiktor swore revenge. He would make Ad feel just as bad as he did – and worse!