开放二胎政策后，周凝雪为家里迎来刚出生的妹妹而忧虑，在校舞蹈团的同学，唐梓琦、唐梓瑶、徐梓轩、徐梓晗姐妹和兄妹，薛嘉慧、薛嘉凯、薛嘉旋姐弟妹三人，和同学贺思珍、童雨晨的影响下，放下心结，欣然接受了新生妹妹的到来。
遇播放卡顿或无法播放时，可切换线路播放
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