Complex sentence: Shortly afterwards, Eep is then caught by Grug (who had been frantically searching for her) who brings her back home, planning to keep her in the cave for the rest of her life.
Split into simpler sentences: Shortly afterwards, Eep is then caught by Grug (who had been frantically searching for her). Grug brings Eep back home, planning to keep her in the cave for the rest of her life.