为免涉足江湖恩怨情仇，玉云龙 (萧正楠饰) 与姐玉娇凤 (简慕华饰) 安份守己经营客栈生意，谁料云龙为重夺旧爱艾冰冰 (汤洛雯饰) 芳心毅然参加新晋英雄大赛，因而牵涉揭发东厂黑幕，被东厂的仇不群 (黄智贤饰) 收入监牢，娇凤救弟心切，暗中放风指客栈有隐世宝物，不群不单立即释放云龙，更派出左右手仇在心 (陈凯琳饰) 跟随云龙到客栈收取情报，此事亦引来各路隐世英雄一一涌现，各施奇谋，期间令一直寻找杀害双亲的在心发现真相，倒戈相向对付不群之馀，更与云龙产生感情，决心一同改革武林，令本已奄奄一息的武林再现生气，但二人却陷入本是慈悲老人任我飞 (姜大卫饰) 筹谋已久的复仇大计……

　　As season four begins, the Roses are making the most of life in Schitt’s Creek, and —Moira’s constant talk of escaping aside— are finally starting to feel at home in the town. Johnny is busy running the motel with Stevie as his partner. Business is booming, but it’s a challenge for him to balance work and family, while dealing with Roland’s antics. Moira is carrying out her duties with Town Council and the Jazzagals, and is also looking for new ways to utilize her talents, whether it’s through a theatrical performance, or by helping Alexis navigate event planning. David is managing his store and attempting to maintain a brand new relationship, but between struggling to find the time for romance, and overcoming the anxieties of his dating past, this is proving to be a challenge. Meanwhile, Alexis is putting all of her energy into school and her career, but is finding it difficult to focus when she still has lingering feelings for her ex-fiancé, Ted.

　　影视公司老板裴光明，生意做得顺风顺水之时，突遭变故。意欲轻生的裴光明被司机钱龙救下，命保住了，却患上了“选择性失忆症”。为照顾裴光明，钱龙与女友江南感情破裂。善良的“演员群头”梁珊,得知钱龙知恩图报，将房子优惠租给了正需要帮助的他们。在钱龙和梁珊的努力下，裴光明渐渐康复，他俩还帮裴光明查明当红影星夏天就是他的亲生女儿。二次创业的裴光明，准备让夏天出演自己新剧的女一号，不想被迫使他破产的幕后黑手思文影视的董事长付强抢先一步与夏天签了经纪合约。为了夏天的前途，裴光明挪用新剧拍摄资金赔偿了思文影视合同违约金，而自己却进了拘留所。为了解救裴光明，钱龙、梁珊、夏天等人齐心协力，帮助裴光明还清了债务，摆脱了困境。裴光明事业再度辉煌，付强最终因合同欺诈被绳之以法。裴光明和钱龙最终收获了各自的幸福。