"Please do not open." is written on the mysterious package that Nemo receives. So Nemo opens it... Please do not open, Volume 3: "I really have no time for a new monster." When Nemo receives the third package, he takes it back to the post office unopened. Done, thinks Nemo. Well done, think his friends. Wrong thought. Because: 1. It suddenly becomes pitch dark in the city. In the middle of the day. 2. Someone else must have opened the box. 3. And the creature that was inside is now wandering around freely. Nemo, Fred, and Oda have no idea what kind of creature it is. They only know what was written on the box: "Please do not open - thirsty..." After the children's book bestseller success of Volumes 1 and 2, here finally is a new funny and turbulent adventure about school, friendship, and a lost creature that wants to go home. Full of surprising twists, wordplay, and with many illustrations.