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.

Amaia's life, according to her, just sucks. Overnight, she has to say goodbye to her life in Barcelona, where she has all her friends and her day to day already established, to go live in her mother's village, where NOTHING ever happens. However, she will soon discover something that could turn her life around... that perhaps she has inherited the powers of her grandmother: a woman she never met, but with the reputation of being the only witch that has ever lived in the town of Salabarria.