澳洲华人黑帮「解决师」K（王浩信饰），欲远离黑道，挚爱Chloe（张曦雯饰）意外身亡且被嫁祸追杀。K到香港成为中学体育老师O Sir，展开第二人生。5E班新任班主任Jovy（唐诗咏饰），实为黑帮龙头千金，父亲金盆洗手令黑白两道掀起巨浪，且殃及校园，O再以解决师身份保护身边的人。督察Man Sir（张颖康饰）矢志铲除黑势力，一个真相令其道德观崩溃，踏上成魔之路！Jovy父被暗杀，为制衡乱局接管龙头之位，O协助保护。正邪世界重新定位，谁能拨乱反正？
When a bus explosion kills several innocent people, the team jumps into action. Scola tries to balance fatherhood with the job.
It is based on the fate of a psychiatrist who, years after her disappearance, deals with loss of his daughter, who has been missing for years.
剧集以疫情大流行后的日本为舞台，讲述了拥有政府否定人权的特殊力量的“Valiant”的存在，描述了拥有不同背景的年轻男女的相遇，在不合理的世界中追求自由的战斗，以及在那里孕育出的爱情。
Netflix已续订《囚网之内》第二季。
