Head of Household: Each week, 1 person wins HOH and nominates 2 people for eviction. If the POV holder uses it on the nominees, they have to pick a replacement nominee. At evictions, If it's a tie then the HOH casts the sole vote. Power of Veto: Power of Veto is a competition that is held each week after nominations are held. This competition gives one housemate the chance to change the nominees. The HOH will replace any nominee that has been taken off the block. Wing Wars: The sixteen houseguests are split in to two wings of eight (White Wing and Blue Wing). Each wing would have its HOH, POV, and two nominees, making four nominees in total. The two wings would then merge for a day (into the Red Wing), and they would decide together (using a group POV) one person to save from the block (no replacement). The next night, one of the three would be evicted, and after the live eviction the wings un-merge. Twins: Each of the wings has a houseguest with a twin. If that houseguest is evicted, the twin would join the game at the eviction and they would vote one of the twins out. If the houseguest is not evicted before the merge, the twin would join the game, and both would receive immunity. Mole: Every week, a mole card is hidden in the White Wing and Blue Wing. The houseguest who finds it will be able to see someone's vote the day after the eviction (given that the user even survives the eviction). However, they will no longer be hidden once the houseguests permanently merge into the Red Wing. Instead, a competition will take place every week until final five to win the mole card.
The sixteen HouseGuests entered the house. However, they were split in two groups of eight, each not knowing the other group existed. In the White Wing, the eight introduced themselves quickly before Adam took everyone except John to another area. They talk about forming an alliance. Candy and Mirabelle, who don't feel they're safe in the alliance, gather the girls and form a girls alliance called #GurlzGotCurlz. John notices that no one talks to him and gets worried. Meanwhile the guys of the majority gather and create their own secret alliance and name themselves The Alphas.
In the Blue Wing, the HouseGuests are more observant and are shocked they only have 8 members on what they think is the full cast. The wing starts to settle down more slowly than the White Wing, each getting to know each other. Soon, there were Mykaelah and Eli on the outs and the men and women being separated like the other wing.
The next day, both wings held their HOH competitions, the White Wing going first. The competition is called Wheel of First Impressions. The first spinner was Martin, who landed on Bold and Strong, and picked John and Adam. Adam received all votes and a grumpy John was eliminated first. Adam then landed on Sneaky and Cute, and picked Candy and Mirabelle. Once again, the vote was unanimous, with Mirabelle being the next spinner and Candy eliminated. Mirabelle landed on Annoying and Bold, and picked Adam and Martin. Adam narrowly eliminated Martin and got to spin again. He landed on Bright and Loud, and picked Olivia and Erika. The vote was almost unanimous with only Courtney voting Olivia who was eliminated. Erika then landed on Obsessive and Childish, and chose Courtney and Mirabelle. Mirabelle ended up receiving more votes, moving on to the next round. Because the spinner was always the person who was chosen and won instead of being random, Mirabelle would be the spinner, but since there were only two options, the vote was just between Adam and Erika. Adam received more votes and the final voting was between Adam and Mirabelle. Mirabelle nearly lost and Adam became the HOH for his wing.