Where's Lorena?

Hello, I read this book," Where's Lorena? "

Alex and Lorena are brother.

One day, their mother ask Alex to go out with Lorena, but he refuses.

She forced him to go out with Lorena ,so they go to a fairground.

Alex went to the fairground with his sister Lorena.

Then he finds his friends, and he don't want to be seen herself with a younger sister.

He tryed to leave her and she get lost the way.

He noticed his wrong, and try hard to find her .

Where's Lorena?