Roll No 21

In the classroom, Vrishchika seeks revenge on Kris with bugs. Vrishchika's plan quickly fails when Dr. J asks the students to start counting bugs, and Kris joins forces with his friends to defeat the bugs and Vrishchika with a giant peacock.

One day, Madhu creates his alter ego, Maddy, in order to become a popular kid in class. To do so, Madhu and Dr. J devise a plan to have Maddy defeat Kris in a virtual world, in hopes of becoming everyone's favorite.

During Friendship Day, a competition begins to see who is the most popular kid at school. As the competition heats up, Kanishk and Kris join forces against three minions attempting to defeat them.

When Kris begins to act strangely, Golu, Bablu, Madhu and Sukhi begin to raise questions. Later, they soon discover Tarak and Kanishk are responsible and disguised the evil Chatur Chalbaaz as Kris to play tricks on them.

A day at school takes a turn when Kanishk makes Besurdas, the demon musician teacher, and Vasudev, the school PT teacher, switch places.

Outside the Ashram, Kris sets up a free pet wash for everyone at school. When Dr. J brings his three cubs, they transform into ferocious ninja cubs that destroy everything and everyone in sight.