Nico is a very young spy who, thanks to a mysterious magical encyclopaedia, and accompanied by his friend Mega, is able to have exciting adventures in different eras such as the Golden Age (where they join Cervantes at the Battle of Lepanto!).

Under his ordinary appearance, Dominique is not only an artist in the growing of flowers, but also an authentic wizard: without anyone knowing how, he has managed to convert a corner of Paris into a garden.