From the first sight, Hyun-jin and Tae-hyung mistake each other for the worst, never expecting to meet again, let alone become in-laws. After a tragic accident leaves their nephew Woo-joo (‘Universe’ in Korean) orphaned, Hyun-jin and Tae-hyung are left with no choice but to care for him together. Thrown into unfamiliar roles as co-parents, these two different, imperfect adults struggle to navigate not only childcare but also life and love—while slowly beginning to orbit each other.