Gisi, Manne, Bert and the other students from class 6b did not expect that their summer vacation would be so thrilling. It all started when they were invited to ride in a new electro-locomotive. Because they want to thank Mr.

"Seven with one blow" is the inscription on the cheerful little man's sash - referring to a heroic feat in which he swatted seven flies at once. Emboldened by this success, the journeyman tailor wanders through valleys and over mountains testing his courage.

The little tailor is eating some delicious plum butter while he sews, but the smell attracts a swarm of flies. The tailor swats at them, killing seven at once. He is so impressed by this act that he makes himself a sash with the motto "Seven With One Blow."

One sunny day, fourth grader Thomas is heading to school when he decides that the streets of Berlin are much more interesting than his classroom. When he notices a building on fire, he alerts the fire department and ends up saving two small children's lives.