A comedy drama centering around 4 sisters. The sisters and their families live in the same multi-story building with a coffee shop on the 1st floor.

For once, something a little fresh, at least by K-Drama standards. We're talking body exchange, which has been done many times on the big screen, but rarely on Korean TV. The idea of Park Jin-Hee playing an Ajumma and Shim Hye-Jin going into sexy mode sounds just about right (the initial setup is the opposite, obviously), and if the script builds on the interesting outline, this could be fun.