The story centers on middle and high schoolers in the spring of 2020, as COVID-19 slowly causes school and club activities to be canceled. Ibaraki second-year high schooler Asa, Tokyo first-year middle schooler Mahiro, and Nagasaki innkeeper's daughter Madoka, who all met through astronomy club activities, begin to use the Internet to meet and talk to each other. They all participate in the "Starcatch Contest," where they race to find stars using their telescopes.