Although Adikel (Tang Long) and Bater (Guo Songtao) are brothers connected by blood, they have been apart for a long time since childhood, which makes the friendship between the brothers very indifferent, and even there is only cold eyes and silence between each other. When they reached school age, their parents decided to send the two brothers to the same school and foster them together at their grandfather's house. However, even if they lived under the same roof, the awkward atmosphere between the two still did not ease. In a blink of an eye, summer vacation came. At the same time, the elderly grandfather unfortunately passed away, leaving the two brothers alone in the empty room. The two brothers who waited and waited for their father decided to rely on their own strength to cross the vast 500-kilometer prairie and find their way home. In this way, the two children embarked on a journey, and along the way, there were endless difficulties and troubles waiting for them.