| Each 30 minute episode is dedicated to a separate issue or theme and consists mainly of related short featurettes, which explain, explore and educate how things of everyday life and even complex systems work. It spans a wide variety of topics from technology and industry to something as mundane as how the postal service works. |
| Name | Character | Episodes |
|---|---|---|
| Peter Lustig | Peter Lustig | 201 |
| Helmut Krauss | Hermann Paschulke | 150 |
| Holger Handtke | Heinz Kluthe | 41 |
| Daniel Zillmann | David Paschulke | 6 |
| Thelma Buabeng | Marla Blume | 3 |
| Bilâl İnci | Obsthändler | 1 |
| Katharina Thalbach | Punilla | 1 |
| Wolfgang Condrus | Bauer | 1 |
| Helmut Krauss | Herr Opitz | 1 |