YOU SAID:

there isn't a plan he doesn't jettison

INTO JAPANESE

彼が投棄しない計画はない

BACK INTO ENGLISH

There is no plan that he will not dump

INTO JAPANESE

彼が捨てないという計画はない

BACK INTO ENGLISH

There is no plan that he will not abandon

INTO JAPANESE

彼が放棄しない計画はない

BACK INTO ENGLISH

There is no plan that he will not abandon