끝날 거야

will end

→ 끝나다
phrase Rare #18,132
will end An informal way to say that something will end or be over in the future. 끝날 is the future form of 끝나다, and 거야 adds a conversational tone of certainty or expectation.
KO: 걱정하지 마. 곧 끝날 거야.
EN: Don't worry. It will be over soon.

금방 끝날 거 야

It’ll all be over soon.

— 타이타닉 (1997)

조만간 끝날 거 야

It’ll be over soon.

— 무방비 도시 (1945)

그러면 전쟁이 끝날 거 야

Then the war will be over.

— 양철북 (1979)

이제 곧, 화요일 끝날 거 야.

Soon, Tuesday will be over.

— 목소리의 형태 (2016)