Monday episode started with the week's eviction nominationsThis week's nominations for eviction are Aari, Anitha, Shivani, Aajeedh, and GabriellaA small dispute about milk turned into a huge conflict between Shivani and Bala. Eventually, Bala tried to pacify Shivani, but the latter was too upset with the former's remarksBigg Boss asked the contestants to pick a name out of a bowl and state what they feel they should work on. When Aari mentioned Anitha's loves ones to state a point, the latter got extremely angryAnitha too upset with Aari's remarks. 'Those are details about my personal life that I confided with Archana. Aari had no business talking about the same,' she feltTuesday's episode started with Bigg Boss introducing a new ball-catch task. The task created confusions as the group had to make up some rules to make it a fair fightThere were moments of conflict, especially about the space allocated and the catching techniques that were used.Aari and Somu engaged in a war of words, as Aari felt that the latter wasn't playing a fair game. However, Somu was quick to point out the hypocrisy.Bigg Boss introduced a Red ball that can decrease the points of the team that it touchesOn Wednesday, Bala and Shivani engaged in another fight. Even though Bala apologised for his behavior, ShivaniAn issue about the rationing of pulses turned too dramatic, as the House captain Bala and Cooking team captain Antha had an argument about itBigg Boss introduced a new segment to the Ball catch. As a contestant's name appears on the TV, he/she had to rush and collect the ball. When a series of names were displayed, there was chaosBigg Boss replayed the moments from the game and the House cracked upBigg Boss asked the group to rank each other's performance during the Ball-catch taskAari and Rio had a tiff this time, as Aari's points about why Rio doesn't deserve to be at the top didn't gel with the latterFinally, the housemates managed to rank themselves from 1 -9Bigg Boss introduced a new twist to the game by introducing a name board. The member whose name gets called will have to catch the ball and select a reward from the boardA huge conflict erupted between Bala and Anitha when they had to choose the worst performers. Anitha said, 'Practice what you preach,' and Bala had a few quick jabs as wellShivani and Aajeedh were chosen as the worst performers of the week, and they were sent to the House JailAnother big tiff followed. Aari accused Bala of playing an unfair game while choosing the worst performers of the week. The latter argued back and the conversation lasted for a whileSomu and Aari were chosen as the best performers of the weekBigg Boss displayed the motion poster of Aari's next film, BagavanAs Christman Carol began to sing, the House turned festive to welcome the Christmas EveOn Friday, the contestants had to gift something to other contestantsGabriella and Rio had to lead two teams in making a plum cake. The segment was fun to watch and Gabby's team wonAfter a tiring contest, Aari was chosen as the captain of Bigg Boss 4 Week 13Bigg Boss asked the contestants some really funny questions as a prelude to their gift-collection taskAfter the gift collection task, the housemates realised that the gifts were from each other's familiesThe House celebrated Christmas and had dinner together. Merry Christmas everyone! That's it from this week