가 어떻게 됐는지

what happened to

→ 가
phrase Common #4,665
what happened to Used to ask or refer to what happened to someone or something. The subject before 가 can change, and the ending -는지 makes it an embedded question, as in “I want to know what happened to…”
KO: 친구가 어떻게 됐는지 아무도 몰라.
EN: Nobody knows what happened to my friend.

가기 전에 엄마가 어떻게 됐는지 알고 싶어

Before I go, I want to know what happened to Mom.

— 귀향 (2006)