On Monday morning Nela came to school. She was carrying her blue polka dot backpack. The backpack was heavy and wheezed a little. Nela whispered: "Don't frown, it's just breakfast." Suddenly the backpack coughed and said: "I'm hungry, Nela." Nela stood like a pillar by the door. The classroom smelled of crayons and rolls. At the bench, the backpack crunched a crayon like a carrot. Hania squealed: "Hey, give back the crayon!" "My favourite yellow one!" The backpack cmoched and released a glitter bubble. The bubble burst and glitter dots flew. Mrs Ola stepped in and clapped her hands. "Calm down, dear children. Today we are drawing treasure maps." The backpack murmured quietly: "I'll eat the treasures too." Nela slid it quickly under the desk. The backpack crunched again, this time on empty. Suddenly, the sound of a bicycle bell came from the backpack. Something inside rang once quietly, once loudly. "It's not me!" - whispered Nela, turning very red. A map of dots rolled out onto the floor. The dots moved like little ants. Hania squealed and pointed to the ear of the backpack. A tiny captain in a button hat leaned out of the zipper. He waved, pulled a thin string and whispered: "We're taking off now!" The classroom door creaked open and someone pressed the handle.