Five friends, four pranks, one headmaster

**What is this book about?**

In **"Five Friends, Four Pranks, One Headmaster"**, a normal school day turns into a hilarious and suspenseful adventure at Regelberg Elementary School. What begins as an ordinary Monday morning quickly becomes a battle between strict rules and creative fun. The hallways smell like freshly mopped floors, the teachers are unusually tense, and a strange new system is watching every smile. At this school, even giggling seems suspicious.

At the center of the story are **five friends** who each bring their own strengths, personalities, and ideas to the group. **Milo** is the thoughtful leader, **Turbo** is full of wild energy and prank ideas, **Fina** is smart and precise, **Luki** knows the school rules better than most adults, and **Mona** is creative and always sketching clever solutions. Together, they make a fantastic team-and they are determined not to let their school become a joyless place.

A new rumor spreads through the school: **PROJECT PRANK-FEAR**. At the same time, the strict **Inspector Order** begins tightening control over the students with new announcements, warnings, and absurd regulations. Suddenly, "unauthorized happiness" is treated like a problem. The atmosphere becomes tense, and the children realize that if they do nothing, the fun, imagination, and warmth of school life may disappear completely.

So the five friends decide to act-but not with a mean prank or destructive chaos. They create a **small, harmless prank with heart**, something funny enough to make people smile, but gentle enough that nobody gets hurt. Their plan is clever, creative, and perfectly matched to their secret prank code: no damage, no cruelty, just confusion, laughter, and a little bit of rebellion against unnecessary rules.

But while preparing their mini-prank, the friends notice something strange. There are odd sounds in the corridor, suspicious movements near the headmaster's office, and signs that someone else may already be carrying out