Unlike the past, when Alphas and Omegas were abundant, today, in the 23rd century, there are only 1% of them.

Alphas are still at the top of the food chain through persistent bloodline succession, while Omegas have dried up due to indiscriminate exploitation and mu*der. The upper class of the 23rd century must borrow the belly of an Omega to give birth to an Alpha to pass on their power, wealth, and knowledge. Everyone is obsessed with finding an Omega.

The last Omega, Kang Ye-ha, and the Alpha Choi Han-geon who covets his heart as well as his body.