沉迷研究大脑的天才神经外科医生郑世玉（朴恩斌 饰），因一次严重纠纷被吊销医生执照，更被恩师崔德熙（薛景求 饰）背弃，两人从此反目成仇！而世玉更沦为黑市医生，从此将人命玩弄于手术刀之中。
郑河、大英和敏智从小就是好朋友。一天，他们三人在一起喝酒，大英向郑河坦白说他喜欢他，然而，郑河措手不及，拒绝了大英的感情。后来，大英出现说他正在和敏智约会。郑河对大英的意外行为感到惊讶，但他尽力维持他们的友谊。 Jung Ha, Dae Young, and Min Ji, have been close friends since childhood. One day, the three of them were drinking together, and Dae Young confessed to Jung Ha that he liked him. However, Jung Ha was caught off guard and rejected Dae Young's feelings. Afterward, Dae Young showed up saying that he was dating Min Ji. Jung Ha was surprised by Dae Young's unexpected behaviour, but he tried his best to maintain their friendship.
Tornano a scuola i ragazzi di Marina Piccola insieme a nuove facce e forse anche nuovi amori. Pronti per questo rientro a scuola?!
该剧改编自日本漫画家岩明均的漫画作品《寄生兽》，讲述寄生兽入侵韩国，企图用人类作为宿主来扩大自己的力量，而一支名为“灰色部队”的团队努力阻止寄生兽的入侵。
“Abbott Elementary” has made it to the fifth grade.
第四季将于8月开播。
讲述成为人气作家的柔美，以及仍旧只关心柔美的细胞们再次成长，并一如既往地陷入恋爱的“细胞共鸣系浪漫故事”。
