远在宇宙另一端的波波星人因为不堪忍受瓜星人的侵掠，于是举族远迁，将蔚蓝的地球视为他们新的定居点。在颟顸的领袖的指挥下，波波星人将人类驱逐到澳大利亚一处专门修建的定居点，还美其名曰与人类和平共处。绰号“小费”的女孩格莱图蒂•图奇是城市中唯一的落网者，她思念被抓走的母亲，于是带着爱猫驱车寻找母亲的下落。半路上小费遭遇了一名波波星人小欧，小欧是一个令同族人唯恐避之不及的麻烦所在，他不久前用手中的仪器发送了乔迁派对的邀请，谁知其中一条群发给了瓜星人，他由此被同类视作叛徒遭到追捕。 　　类似的遭遇让小费和小欧坐上同一辆车，他们由此踏上惊险的旅程，期间则得知瓜星人追逐波波星人的原因……When Oh, a loveable misfit from another planet, lands on Earth and finds himself on the run from his own people, he forms an unlikely friendship with an adventurous girl named Tip who is on a quest of her own. Through a series of comic adventures with Tip, Oh comes to understand that being different and making mistakes is all part of being human. And while he changes her planet and she changes his world, they discover the true meaning of the word HOME.