"I found this treehouse by accident when I tried to stay away from home. It became my home, my sanctuary. Whenever I'm sad, I just go here. And you can too. That's why I'm showing you this treehouse. When you're sad, just go here." He said. "Who's the owner of this treehouse?" I asked. "I have no idea. Nobody goes here. I guess no one has found this treehouse yet." We then went inside the treehouse. I was amazed by the view. This treehouse was indeed comforting. "Can you keep a promise?" He asked. I nodded. "Don't tell anyone about this treehouse. And while I'm gone, take good care of it." "I will," I said. I'm not the type of person to break promises. I'll take care of his home, while he's gone. Rosella, a 7-year-old girl, just moved into a new town, when suddenly a boy came up to her and handed her a letter. The boy showed Rosella to a secret hideout near their house; in that hideout, you can spot a beautiful treehouse. The boy made Rosella promise to take good care of the treehouse since he was leaving the town without any idea if he was returning. Would they cross their fate again?