'We were all underage'
A 17-year-old boy named Woo-Min (Kim Do-Woo), who is alone
, lives in the same house with Su-Jung (Shin Eun-Kyung), who was her parents' caregiver.
'Woo-min', who secretly watched Su-jeong, who can't speak, grew up in his heart
, finds out that 'Su-jeong' is ill,
and wants to protect her.
However, with the poor hands of a minor who has only grown up, there is
nothing they can do for her, let alone hospital expenses, and in a
season as hot as the weather,
'Woo-min' goes into a cruel world to protect her.