On Christmas Eve in 1968 six-year-old army brat Clairee simultaneously learns the hard truth about Santa Claus and the realities of war. Her bullying older brother Mickey informs her that Santa insn't real and that their absent father is actually far away, serving his country in the Vietnam War。本剧改编自同名漫画,讲述了从未恋爱过的年轻当红演员涉谷大海,因接送年差很大的妹妹而与幼儿园老师青田爱花相遇,在笨拙的同时也孕育出恋爱的爱情喜剧。大海能完美驾驭任何角色,以爽朗的笑容虏获世间女性的心,不过其实是有点天然呆的帅哥。爱花遇到大海后,只有工作没有色彩的日常生活开始发生了巨大的动摇。既是“老师×监护人”,又是“艺人×圈外人”,不可能结合在一起的两人将展开怎样的爱情故事呢…。