1945年,延安的孩子们面对着战火的洗礼,生离死别的考验,但他们仍然能够保持淳朴可爱的天性,有一种从寻常生活中捡拾点滴快乐的本领。在大人们尽力维护的一片童真天地里,孩子们在自由地感受,自在地成长。。Without warning, millions of mysterious alien "doors" suddenly appear around the globe. In a rush to determine the reason for their arrival, mankind must work together to understand the purpose of these cosmic anomalies. Bizarre incidences occurring around the sentient doors leads humanity to question their own existence and an altered reality as they attempt to enter them.。