en CB01 OFFICIAL. Evan (played by Shawn Thia) and Sarah (played by Xenia Tan) enlist into the Institute of Sustainable Population, a governmental facility that assigns all conscripts a spouse as a drastic measure to increase the country’s population. They both hope to make the best out of their situations, albeit in polar opposite ways. Evan tries to game the system for his benefit, whereas Sarah works towards an honest living when their paths eventually cross - for the worse.