Not the Spies You Expected - Episode 1

Jill and Helen realize they've transmigrated into enemy princesses and must marry brothers Joseph, the Reaper general, and Ben, a playboy. They learn the original Helen was convicted of treason and executed, so they fear they're targets of vengeance and decide to get through tonight and plan afterward. Joseph warns Helen is dangerously scheming and must be restrained; Ben assumes Jill was planted to seduce him, plans to drain her for information and then send her to the encampment. Tonight's event becomes the immediate test that will decide whether they survive or are discarded.