In BIGBUG, it's April 25, 2045, and Alice (Elsa Zylberstein) is spending time with her new boyfriend, Max (Stephane De Groot), and his teen son, Leo. While Alice talks of her journal and interest in calligraphy, Alice's service robot, Monique (Claude Perron), observes the situation as she cleans and serves snacks, while the voice of Nestor, omnipresent virtual assistant, answers questions and works to ensure maximum comfort for the humans in the house. Everything else is monitored by the robot head Einstein, the "brain" of the house's functioning. Alice and Max's time together is ruined when Alice's ex-husband, Victor (Youssef Hajdi), shows up with his girlfriend, his spoiled administrative assistant Jennifer, and his and Alice's teen daughter, Nina. Victor informs Alice that she needs to watch Nina earlier than the usual times of custody because he and Jennifer are going to a luxury resort. Shortly after, Alice's neighbor Francoise stops in for a visit. As all of this is happening, the news reports that the roads are clogged with the worst traffic seen in quite some time. The self-driving cars are at a standstill, and the robots, after monitoring the situation, keep all the humans inside the house to prevent them from getting hurt. As Victor does everything possible to leave, Alice and Max try to continue their budding romance. Leo marvels at Nina's collection of ancient computers, including a relatively primitive robot named Tom, and Francoise tries to get her dog that's trapped outside to help. Meanwhile, Monique, Einstein, and Tom discover that a new and higher-tech breed of robots called Yonyx are trying to take control of the planet from the interior humans, and that they must show their solidarity by trying to become human themselves. As the robots try to learn the arts of seduction and joke-telling, the humans, with increasing desperation, try to find a way to outsmart the robots in the home to open the doors and let them outside. When an escape effort almost succeeds, this attracts the attention and ire of one of the Yonyx, a lumbering bureaucratic bully, and now the humans and house robots must find a way to fight back and regain their freedom.