Kim So-yeong

Eunha, who is hired as a contract worker on behalf of Seonju on maternity leave, inevitably visits Seonju and receives the data while working on the project. However, due to a sudden accident, the data cannot be received, and Seonju suggests finishing the project together.

Gayoung and Seungju go to sort through their friend Jiwon's belongings. Among the items Jiwon left behind, they encounter secrets they've each kept hidden. The moments of that day, when they couldn't cross the crosswalk, come flooding back.