The film concludes with Armstrong, the genius baby, making the decision to return to a regular child’s life, seeking the embrace of his parents once again. Meanwhile, adult brothers Tim and Ted Templeton, who had grown apart, reunite when they discover that Tim’s daughter, Tina, is also a Boss Baby on a mission. The Acorn Center, where Tim’s daughter attends school, is revealed to have sinister plans involving mind control. To thwart this, Tim and Ted revert to their childhood forms with a formula, infiltrating the school to expose and confront Dr. Erwin Armstrong, the mastermind behind the plot. Armstrong, a genius baby, had abandoned his parents and planned to use an army of genius babies to create a mind-controlling app. The Templetons, along with Tina and Tabitha, Tim’s daughter, work together to defeat Armstrong during the school’s winter pageant. Despite setbacks, they prevail with the help of the family’s pony, Precious. The brothers’ bond strengthens, Tabitha gains a newfound respect for Tim, and Armstrong abandons his world-domination plans to return to a normal life with his parents.