The serial is based on several stories selected from the writings of Ruskin Bond, by Shubhadarshini Singh keeping in mind the continuity of the story and the character of Rusty around whom the story revolves, a semi autobiographical picture of the author's childhood and youth.

The first part shows Rusty as a nine year old staying with his indulgent father who talks to him about trees, nature, the world and books. Rusty's mother has left his father and stays in another city. Suddenly Rusty's father dies and his mother takes him away and sends him to a boarding school.
 
The next part shows Rusty spending his holidays with his granny. His uncle Vicky is also staying there. The three spend a happy holiday together, Rusty picking on his lazy uncle.

When Rusty goes back to boarding school, a boy, Daljit from Kenya inspires him to run away from school and they plan out the great escape.

They are caught after some adventures. A truck driver who gives them a lift and teaches them the importance of trees, a gang of brigands who tie them up in an abandoned cottage and the brother, who comes chasing them from their school.

This time his stepfather Major V.K. Rathore, steps in and decides to keep rusty at home instead of sending him to boarding school. Granny's dog, Crazy, is also accepted by the Major.

Then Rusty comes to stay in Mussoorie with his mother and stepfather, who has been posted there.

Rusty meets the octogenarian spinster, a fading but famous beauty who is also an amateur botanist, Miss Constance Mackenzie, reduced to starvation by poverty, played by Nadira. She gives Rusty a pricelessbook on the himalayan flora, Flora Himalienesis, before dying.

The 13th episode ends with Rusty and his stepfather's hostility turning to a kind of affection over Miss Mackenzie's book.