Who stole the Grass?

We went for our walk today and as soon as we got in the field we could see something had happened.

Flynn: Eric the grass isn't right. It's not long any more. How can we bounce around in it?

Eric: I don't know. Something strange has happened to it. I'm following a trail to see if I can find the long grass.

Eric: Nope, no sign of it.

Flynn: Well, we may as well lie down here for a while until we can work out what happened.

Eric: Yup, something's going on. I wonder if dad knows anything about it.
We'll let you know when we find out where our grass went.