《老家伙》肖林没有出轨。
肖林晚归家了，他对妻子马玲说是因为单位加班，但其实他在家附近的养老中心参加了一个乐队表演。马玲心知肚明，虽然没有揭穿他的谎言。第二天，她去找肖林的父亲肖长庆，怀疑肖林可能出轨。肖长庆说肖林是个老实人，可能是工作上出了问题，导致晚归。但马玲已经确认肖林的工作顺利，并且得到了加薪，她开始怀疑肖林的借口。她坚定地表示，如果发现肖林真的出轨，她将离婚，并不让他见孩子。
肖长庆意识到事态严重，决定调查。他打电话给肖林，要求他周末去看望奶奶，但肖林以工作繁忙为由推迟了见面。肖长庆询问了陈新城，得知肖林的工作并不需要周末加班，这让他更加怀疑肖林的说辞。
肖长庆找到老友孙前程商量，两人决定秘密调查肖林。周末，他们在肖林家附近蹲守，果然看到肖林接到电话后未换灯泡便出门。他们以为他不会再出门，但马玲打来电话告知肖林又出门了。肖长庆和孙前程紧急跟随，发现肖林径直开去酒吧。
他们进入酒吧，发现肖林和晓晴、大志一起在舞台上表演乐队，晓晴唱歌，大志敲鼓，肖林弹吉他。孙前程大为惊讶，录下了这一幕，但肖长庆拉他出去。
这次事件揭示了肖林的真实情况，虽然不是出轨，但肖长庆对此保持警惕，决心继续关注儿子的行踪。
《老家伙》精彩剧情介绍 第23集：林洁受困扰要搬走
Winter passed and spring arrived. Ma Ling gave birth to her second child, a lovely baby boy. Earlier, Ma Ling had let go of the nanny, and Xiao Lin's eldest uncle sent his daughter, Erni, to take care of her. Although Uncle Xiao Lin said Erni wouldn't accept payment for her work, it didn't seem right to Ma Ling. After discussing with Xiao Lin and Xiao Changqing, they decided to give Erni a monthly stipend of 3000 yuan.
Later, Xiao Changqing talked to Sun Qiancheng and agreed with his reasoning that he should sever ties with his deceased wife's family to avoid complicating matters for Erni. That night, Xiao Changqing told Ma Ling about this decision while she was soothing the baby. Ma Ling, however, felt something was amiss with her father-in-law.
The next day, Ma Ling went to a nursing home and learned from Aunt Niu that Xiao Changqing was dating someone. Ma Ling didn't oppose Xiao Changqing dating but disagreed with him dating Lin Jie. Lin Jie had no job or social security, which could burden Xiao Changqing in the future if she fell ill.
Erni overheard the conversation between the couple and exaggerated the situation when telling her father. Soon, all of Xiao Changqing's rural relatives knew about it. They falsely claimed Xiao Changqing was unwell, prompting him to rush to the countryside to visit them. Xiao Changqing's younger brother's family insisted he stay for dinner.
Meanwhile, Xiao Changli, having finished discussing Xiao Changqing's love life with her mother, went straight to Lin Jie's place. She wasted no time in telling Lin Jie about Xiao Changqing's extensive family responsibilities and how there was little financial benefit for her.
Confused, Lin Jie promptly kicked Xiao Changli out. Back at Xiao Changqing's, the poor relatives began crying, claiming their sister had died early. Xiao Changqing had no words but reassured them he had no plans to remarry. Relieved, they started asking him for more financial support. Helplessly, Xiao Changqing agreed to an additional 200 yuan per month.
The poor relatives were overjoyed and continued to impose on Xiao Changqing, asking for help finding jobs, buying cars, and even funding their children's weddings. Xiao Lin and Xiao Jian, the two brothers, discussed their father's love life. Xiao Jian supported Xiao Changqing's twilight romance, while Xiao Lin wondered what attracted the woman to their father.
Under pressure, Xiao Changqing hurriedly finished his meal and was escorted away. Back at the nursing home, Sun Qiancheng anxiously informed him that Lin Jie was planning to leave. Xiao Changqing rushed to Lin Jie and apologized for his sister's rashness. Sun Qiancheng and the others convinced Lin Jie to stay. The originally agreed rent for Lin Jie's place suddenly increased, leaving her with no choice but to stay at the nursing home a while longer.
Feeling dejected, Xiao Changqing drank heavily and poured out his fifty-plus years of burdens to his mother. She listened with teary eyes, lost in thought. Afterward, Xiao Changqing deliberately kept his distance from Lin Jie. Without informing Xiao Changqing, Sun Qiancheng secretly investigated Lin Jie's old classmates.
Meanwhile, Dazhi and his colleagues filmed at the nursing home. Xiaoxiao was teaching Xu Gong how to use video calls on his phone. Xu Gong called his son, Jian She, and rambled on about wanting him to visit the nursing home and enjoy his favorite dishes.