Sambandham, who is unaware that Janaki's watch is in his stomach due to a mix-up with another patient's X-Ray, mistakes Janaki's romantic overtures to be genuine, and falls in love with her. He also inadvertently foils all her plans to sedate him.
Sambandham, oblivious to the fact that Janaki's watch is lodged in his stomach from a medical error, mistakenly believes her romantic gestures are sincere and develops feelings for her.  He inadvertently thwarting her plans to tranquilize him.