About a 27-year-old lawyer with Asperger's syndrome. Due to her high IQ of 164, impressive memory, and creative thought process, the brilliant Woo Young Woo graduated at the top of her class from a prestigious law school.

Dae-soo and Mi-ra have Ah-reum when they are 17. Ah-reum is diagnosed with progeria, and as his body rapidly ages, his finds comfort in writing a story about how his young parents fell in love.