At first glance, Serro Azul may seem like just another typical inland town, quiet and surrounded by mountains, where technological advances such as internet and cell phones have not yet arrived. A place where anyone who passes does not pay much attention, not knowing what is missing, after all, a city that is near Greenville and Tubiacanga could not fail to have its peculiarities. The main one is a source with curative and rejuvenating properties, which is the outermost part of a gigantic aquifer, a huge reservoir of what is becoming the most precious possession of the Earth: water. This source is protected by seven guardians whose mission is to ensure that this wealth does not reach the wrong hands.

Život v Amaiině novém rodném městě začne být mnohem zajímavější, když se ve škole rozšíří fáma, že zdědila kouzelnické nadání po babičce.