A quiet day in Atlantis finds Aquaman and Mera discussing the eventual fate of their son. Aquaman fantasizes that Arthur, Jr. will grow up to be a crime fighter, and future protector of the seas. Mera, however, desires that their son become a great scientist, and eventual ruler of Atlantis. Distracted by their spirited debate, neither notice "Aquababy" wandering off. Outside of Atlantis, a dragon-shaped submarine descends on the domed city. On board is Genghis Khan's greatest scientist, Tamerkhan. Centuries ago, Tamerkhan saw the era of the Mongol empire coming to its close. He built a great submarine, and departed beneath the waves with his personal bodyguard, the four-armed Mongol warrior, Attucka the Merciless. They turned to piracy to survive. Tamerkhan invented a formula to retard the