follow (one) to the ends of the earth

To follow one anywhere, including the most remote or inaccessible places. My love for you is so strong that I would follow you to the ends of the Earth! That no-good cheat robbed me of my inheritance, and I'll follow him to the ends of the Earth to get it back. If your daughter finds out that you hate her boyfriend, she'll be even more driven to follow him to the ends of the Earth.