Sebastin is a hiker. When he grows up he wants to be a mountain guide. He takes long walks in the Chilean mountains where he lives. He passes small streams with water, geysers with steam and snow fields. How is it possible that water turns into steam or snow? Sebastin starts an investigation and does a lot of fun experiments. He makes a cloud in a bottle, a cola geyser and a steam boat. And finally, he makes a geyser which blows as high as the real ones.

Originally released by Nederlandse Publieke Omroep, 2015. Streaming video file encoded with permission for digital streaming by Infobase on August 11, 2016.