The show premiered on 3 October 2021 on Star Vijay and Disney+ Hotstar with Kamal Haasan as the host for the fifth time.

Niroop Nandakumar, Thamarai Selvi, Abhinay Vaddi and Suruthi Periyasamy returned as contestants in Bigg Boss Ultimate.

On 4 September 2021, incorporating a paradigm shift in a Tamil wedding scene and co-relating it with the Bigg Boss house.

The 5 housemates who manage to steal the medals win a super power to save themselves from eviction in the future and topple captaincy.

Notes: Isaivani swapped the captaincy using FIRE power medal Pairs: Akshara and Ciby, Abhinav and Niroop, Imman and Isaivani, Pavni and Raju, Priyanka and Thamarai, Iyikki and Varun.

Headmaster: Ciby Tamil Lecturer: Raju Personal Development Teacher: Abishek Physical Education Teacher: Amir Leader of Physical Education Class: Akshara Students: Abhinay, Akshara, Imman, Iykki, Niroop, Pavni, Priyanka, Thamarai, and Varun The other housemates assumed the role of classmates in the house.

Niroop swapped the captaincy using EARTH power medal Team Blue: Akshara, Amir, Imman, Pavni, Raju, Thamarai Team Red: Abhinay, Abishek, Ciby, Niroop, Priyanka, and Varun Judge: Sanjeev Pavni swapped the captaincy using SKY power medal Team A: Abhinay, Amir, Pavni, and Priyanka Team B: Ciby, Niroop, Raju, and Thamarai Team C: Akshara, Imman Sanjeev, and Varun Abhinay, Akshara, Pavni, Priyanka, Raju and Varun were nominated for the Week 11 Eviction Process, after all the immunity task.

2nd Immunity Task: Housemates have to survive in a bus kept in a garden area overcoming all the hurdles.

6th Immunity Task: Bigg Boss will show some pictures to the Housemates and have to notice and answer the question.

7th Immunity Task: Nominated housemates photo printed dice kept in the garden area.

When buzzer plays they wanna roll it whose picture coming in front will be out of the game.

8th Immunity Task: In the first stage they wanna finish drinking one bottle of water which is kept on the pedestal.

In the last stage, they wanna jump inside the sack and drink the raw egg without spitting it out and pressing the bell to finish it.

Later Abhinay is out of the game and Thamarai win the immunity task and was exempted from the Week 10 nomination process.

Amir and Pavni, Raju and Sanjeev, Akshara and Varun, Abhinay and Priyanka are the pairs.

He will instruct the housemates by using words like freeze, release, rewind, fast forward, sleep mode, and loop.

Ciby, Niroop, Priyanka, Pavni, Sanjeev, Thamarai, and Rajuwere nominated for the Week 13 Eviction Process, after all the Ticket to Finale task.

Later Housemates decides to give the black rose to Niroop, and he is out of Ticket to Finale.

Each week, housemates who did perform satisfactorily in the Luxury Budget Task, are sent to the Bigg Boss underground prison.