Ishtar and Cay are siblings searching for their brother in a post-apocalyptic Earth. After receiving a tip about a person with similar looks and abilities of their brother, they head to the capital of the city-dwellers, Kapala. There the two get separated. Cay must navigate the hidden underworld of Kapala while Ishtar is thrust into the midst of the children of the rulers of Kapala. In the midst of it all, both siblings wonder what their youngest brother was involved in.
Note: Until We Meet Again contains some graphic violence and harsh language.