Story Prof. Dr. Anton Mole, a researcher and explorer of rare animals, finds Kwab Hippo in Africa and takes him to his villa in the remote Sibbelin Valley. Here he tries to raise Kwab. Anton Moleleaves for another expedition and aks Kwab to look after the villa. Every day he has to throw herbs into funnels. Kwab accidentally throws an overdose of herbs (the Fridgedair) into the funnels. An explosion follows and the Sibbelin valley is covered with a thick layer of snow in the middle of summer. The detective duo Oaks - Tootle tries to unravel the mystery. Stefan de Groot
 This story is written and drawn by Dutch comic artist Stefan de Groot. This book is a new version of the book that was first published in 1994. Stefan rewrote and made new illustrations for this text comic. Text comics are comics without balloons, but text underneath the comic strip. This is an old European phenomenon. Stefan got inspired by the works of Dutch comic artists Marten Toonder and Piet Wijn.
