十二岁的海日被妈妈带到内蒙古大草原,偷偷把海日放在牧民阿敏爷爷家不辞而别。小男孩海日突然闯入牧民阿敏爷爷的生活,让他很不适应的同时,又勾起了他对以往生活的留恋。他与海日在一起的生活中,矛盾和摩擦频频出现,同时二人又相互被彼此感动。。As Season 3 of SULLIVAN’S CROSSING begins, Maggie makes the decision to leave her career as a neurosurgeon behind to help run her father Sully’s campground. But trading the adrenaline of the OR for a slower paced life at the Crossing won’t be easy, and Maggie will be faced with many challenges as she continues her journey from the head to the heart.。