"Bring Back The Wonder" (the song)

I'm wondering what the purpose of this song is. It's from the episode "Red's Sea Monster", and it's sung by Red as she's on her way to see the monster again. Why does she sing this song? What is the "wonder" she's talking about and why does it need to be brought back?

Well.....

Maybe “bring back the wonder” means trying to believe in things in can't see. Like when you're growing up, you don't believe in things like you use to. Just a thought. I really don't don't know. Here are the lyrics:

Bring back the season.
Bring back the time.
Bring back the wonder that used to be mine.
Laughing and splashing, we lived in a glow.
Bring back the wonder we knew long ago.
Bring back the wonder we knew long ago.

Wind on our faces, and race on the lawn,
Life was so new it would last on and on.
I was in love with the soft river flow.
Bring back the wonder we knew long ago.
Bring back the wonder we knew long ago.

Yeah, I'd agree with MrsWembley I really do think it's a whole "seeing is believing" thing and how sometimes we lose that ability as we get older, but wish that we could get it back. Does that make sense? I don't know.