The first episode of the popular-science miniseries invites us on an adventure to seek answers about the origin of water on our planet and its crucial role in life on Earth. Consisting of five chapters, the episode encourages us to perceive and use the basic building block of our world in a more sensible way. However, it also introduces us to die-hard fans of water, unraveling the mysteries of its origin and the fundamental principles of its behavior. It reveals the inherent order and systematic relationship of this liquid with other organic species—an interconnection that transcends human understanding. This three-part bildungsroman presents H₂O as a hero whose life cycle is not constrained by the limits of civilizations or the increasingly sophisticated efforts to control and eliminate it.