Amidst their battle against enemy warlord Mega Tron shortly after they are found by their planet's life source, the All Spark, kind robot Optimus Prime and his crew, Ratchet, Bumblebee, Bulkhead, Prowl, Sideswipe, Sun Streaker, Mirage & Hound, fall towards Earth, where he steers their spaceship away from civilians before joining them in stasis. Half a century later, they wake up after a piece of a creature enters their spaceship and give themselves new vehicle modes. While Ratchet analyzes the piece, the rest of the crew goes to fight the creature. During the battle, Bumblebee earns the full trust of twin girls Sari & Slate Sumdac and their older sister Saga, who is four years older than the twin girls. They later get two more friends in Luxury and Meadow James, teen sisters who are four years apart in age and live with their father, diner owner Ryle James, and grandmother, retired restaurant waitress Talulah James, both of whom had recently told both the seventeen and thirteen year old girls they aren't humans, but sisterly robotic beings.