Listen and read.
Mai: What book are you reading, Nick?
Nick: A journey back to Soduka. I'm on the last page.
Mai: That’s a science fiction book, isn't it? What's it about?
Nick: Yes, it is. It's about four creatures Titu, Kaku, Hub, and Barb. They're travelling back to Soduka, a planet like Earth. Along the way they have to land on Earth because their spaceship breaks down. They meet Tommy and become friends with him.
Mai: What happens next?
Nick: Tommy helps the four creatures repair their spaceship, so they can travel back to their home planet. But their commander forces them to return to Earth to destroy it. Tommy and the four creatures try to oppose the commander.
Mai: Sounds thrilling!
Nick: Tommy and the four creatures manage to stop the commander from destroying Earth.
Mai: So it has a happy ending! What do you think about the possibility of aliens attacking Earth?
Nick: I'm not sure about it. But I’m starting to think about it. I sometimes ask myself what we would do if aliens took over our planet.