From the abyssal darkness of the Death Zone, the elite combat team known as the Chest-force emerged. Consisting of six powerful Decepticon bots—Leozak, Gaihawk, Ellbat, Jaruga, Killbison, and Drillhorn—the Chest-force is determined to aid Deathsaurus in his bid to defeat Star Saber and the Autobots. The Chest-force comes together to form the gestalt Liokaiser, a vicious combiner bot with the power of invisibility.