

Ben and Mia are friends. They like to play in the park. One day, they see a big sack near the slide. They are curious. They want to see what is inside the sack.
"Let's open it!" Ben says. He runs to the sack and pulls the string. Mia follows him. She is alert. She thinks there might be something bad in the sack.
The sack opens. Out comes a big, loud, angry dog. It has sharp teeth and red eyes. It wants to bite Ben and Mia. It jumps at them and barks.
"Help! Help!" Ben and Mia scream. They are scared. They try to run away, but the dog is faster. It catches them and bites them hard. They cry and bleed.
No one hears them. No one helps them. The dog has power. It hurts Ben and Mia. They are in pain. They wish they never opened the sack. They are sorry. They are sad. The end.
