This is what happened in the Episode Aired on 25th September.
The episode starts with Naveen doing his experiments in his lab.Monica comes there while cleaning the house.They have a talk.Monica says that Ganga makes her do a lot of work and that she is tired.Naveen gives her two tubes of toothpastes which he had invented and failed and asks her to throw it in the dustbin because if anyone uses it, their mouth would become like a torch.Ganga calls her and she leaves.
Then there is a part of the neighbour's house.
Then,again Naveen is shown sitting in his lab.Ritika comes over and asks him how his experiments are going on.Naveen replies,"tu na gaale pe namak math chidak" 😆 then corrects himself and says "Jaale pe namak math chidak" She asks him what happened.He says that his experiment of toothpaste has failed.She then asks him about his second experiment of the medicine which can be used to grow hair on a bald head.Naveen replies that he is tensed about the same,because he has not found any one with a bald head on whom he can try his experiment and that if the medicine is not ready his boss wouldn't leave him.He talks about trying the medicine on Dadu's head.Ritika asks him whether he is mad and reminds him of two of his earlier experiments(which are shown in flashback-one of a leg pad and another of a perfume which he had tried on Dadu and which was a failure.) She tells him to forget about trying it on Dadu and leaves.Naveen talks to himself that Ritika is right and that if he would ask,Dadu would refuse him (he is shown to be saying this with a mischievous face.)
In the next scene,the Patel family has come over and is asking Naisha for salt.There are some talks.
Mr Patel's father steals the toothpaste from the dustbin without Naisha noticing.
Next,Naveen applies his invented medicine on his hand gadget and comes out of his lab.He sees his son Nick on the sofa and goes to him asks him where is Dadu? Nick asks "mere Dadu ya aapke Dadu"? Naveen replies mere Dadu.Nick then says,"wo jaake mere Dadu se pucho kyunki, paanch minute pahle, aapke Dadu ko mere Dadu ke saath Dadu ke room mai dekha tha".😆 Naveen is confused and asks " ek minute konse, matlab mere dadu ke room yaa tere Dadu ke room mai"?
Nick replies,"off ho pops, ghar mai do hi tho Dadu hai,jake dekh lo, konse Dadu konse Dadu ke room mai hai and don't disturb me let me play my game."saying this he takes his tab and leaves. 😆
Naveen tries to stop him and says "are kamal hai..jab batana hi nahi tha,tho mere dadu tere Dadu khelne ki jarurat kya thi".
In the next scene,Naveen is seen slowly entering dadu's room.He then closes the door.Dadu is seen on a chair with his eyes closed probably sleeping.Naveen makes some noise and calls out to him in an attempt to ensure that he is not awake.Dadu doesn't respond, so Naveen is assured that he is sleeping.He then says, "sorry Dadu aapka faida uthane wala hu,hosho hawas me nahi, neend mai hi sahi".Then with his hand gadget, he applies the medicine on Dadu's head.
Again there is a scene of the Patel family.
Next,Dadu is shown..Dadu gets up from his sleep..feeling something on his face,he gets up from the chair and looks in the mirror and sees that there are red rashes on his head and face.He realizes that it is Naveen is behind it and screams out his name.Outside,hearing his name,Naveen thinks that his experiment has become successful and a miracle has happened and he is happy.Then,Dadu comes out of his room angrily, Naveen is shocked, to see his condition.Dadu asks him what he has done,a shocked Naveen thinks to himself that solution No.1 has reacted wrongly.
Again there is the Patel family's part.
Then,Dadu is shown approaching Naveen angrily.Naveen asks him what he has done to himself? Dadu says that you did your trial on me,Naveen refuses and says I didn't do any trial Dadu,I didn't do anything and swears that he doesn't have any hand in it.Dadu shows him his hand gadget and asks, then whose hand is this? I got this near my chair.,and says that he knows that Naveen once again made him a scapegoat of his trial.Naveen says sorry Dadu wo galti se..Just then there is a message about a video call from Naveen's boss.Naveen hides Dadu behind himself and receives the call.Naveen and his boss greet each other and his boss asks him about his experiment and whether he tested it, on the head of any bald person.He goes on to tell him to be careful, because this experiment of his, is very important for their company and that from Japan Head Office the CEO of Bakinaka who is very exited about this project,has told that this time, he would himself come from Japan to India to check the results of the project.Naveen's boss tells him that, this time he is serious and ends the call.