On Top of the World
Disclaimer: I don't own these characters, Nick and Viacom does!
Arnold
He's on top of the world. Not figuratively speaking, he's actually there doing research on animals and flying to strange and exotic places. He's learned to let go of some old childhood dreams, like finding his parents. Instead, Arnold just does good in the world by researching on how global warming affects the climate.
And he's on top of the world.
Helga
Helga ends up exactly where she envisions herself in life - being a writer and a poet. But while she clings to one dream she's been always wanting to have - Arnold, she can't have him. Since he's nowhere to be found.
And she's only lost.
Gerald
Gerald lost contact with his old best friend, Arnold, only because he didn't really understand why his buddy would want to be somewhere so cold, so isolated and so lonely.
And he's only lonely.
Phoebe
Phoebe is the only one who slightly understood why Arnold is at Ny-Ålesund right now. It's only saddens her that nobody is truly happy at all.
And she knows the truth.
And that's how being on top of the world truly feels...