YOU SAID:

I'll ask just in case, but what do you plan to do?

INTO JAPANESE

念のためお聞きしますが、どうするつもりですか？

BACK INTO ENGLISH

Just to be sure, what are you planning to do?

INTO JAPANESE

念のためお聞きしますが、何をするつもりですか?

BACK INTO ENGLISH

Just to be sure, what are you planning to do?