Globi meets the siblings Tara and Eneri, who had to leave their home on the island of Kiribati due to rising sea levels caused by global warming. The world's careless use of energy is responsible for this. Globi wants to learn more about the impact his electric toothbrush has on the global climate change and goes on a journey of discovery with his new friends to find out.
The three of them learn about conventional sources of energy like coal, oil, natural gas and nuclear energy, and about green or renewable energy sources like solar (solar thermal and photovoltaics), geothermal, hydroelectric power and wind energy. Globi builds a solar model car and makes a small water wheel out of waste products, that with just a few simple steps can be transformed into a wind turbine. At the end of their journey, they visit a place where the energy transition from conventional energy sources to renewables has already taken place.
The book has captivating illustrations and it is suitable for families and children from ages 8+.