This is the fourth book of Trypon the Fafagalos that you loved so much and it's fantastic! Trypon will meet a resourceful inventor who, along with his dwarf and robot, is preparing a time machine that can transport anyone through space-time. However, the poor guy is forgetful and always mixes up the remainders in his mathematical calculations. The result? Travelers get lost in space-time and then good luck finding them... This is exactly what happens to the mischievous Trypon when he is transported to ancient Greece, and even to the Underworld! And things get worse when he pops up on a cooking show on TV... Fortunately, all the children of the world will rally to save him, just as you would. So, don't waste time. Open the book and have a good laugh!