Esta serie narra las aventuras de un niño y un grupo de personas mayores que se embarcan juntos en viajes extraordinarios. Descubren la magia y los misterios del mundo que los rodea, lo que a menudo conduce a resultados humorísticos y conmovedores. Es una historia de amistad intergeneracional y del descubrimiento de que nunca es demasiado tarde para comenzar un nuevo capítulo lleno de maravillas.
Harry's arch-enemy, Gestapo Lil, is causing trouble again. After Harry's aunts and their gang put Lil's slimy accomplice in jail, Lil swore to get revenge... Gestapo Lil and her cronies are after stash of fabulous hidden treasure - and only Harry and his friends are standing in her way...
When Harry's sent to stay with his great-aunts at Lagg hall, he thinks he is in for a really dull time. But Auntie Florrie, Aunt Bridget and their elderly friends aren't quite as Harry expects them to be. Aren't they too old to be driving fast cars and climbing trees?