Neel and Aayush’s Nani Ma arrives and this tough, ex- military nurse, popularly known as Captaan Nani is in charge of things while their mother is away on police duty. Meanwhile, Neel who is always making excuses to bunk PT class, is in serious trouble with the school PT coach, Subedaar Sir. Subedaar Sir informs Neel that he is flunking PT and as a result will have to spend his summer break coming to school and putting in many extra hours of practice. And Subedaar Sir has done what Neel dreads most – he has informed Captaan Nani of Neel’s poor performance. Nani shows up in school and things take an unexpected turn when the two ex-Army veterans hit it off. And when Subedaar Sir shows up at their home to take Nani Ma out for dinner, little Aayush puts the tough coach through the mill, quizzing him about his knowledge of first aid and awareness of senior citizens’ problems. A visibly cowed coach promises Aayush that he’ll bring Nani home on time and will also remember to retrieve her dentures from the food.
Meanwhile, Aayush, Dheeraj and Jai struggle to dog-sit Chutki, their neighbour aunty’s enormous dog, while she is away on vacation.