Bandora targets a creature awakened from underground whom the Zyuranger discover may be a victim instead of a mere monster.
An earthquake brings an underground monster Goda onto the surface. Despite its monstrous looks, Goda has a gentle heart. Goda just wants to protect its eggs. Yet, Bandora abuses Goda's power to defeat Zyurangers.
Kyoryu Sentai Zyuranger Volume 4 features episodes 31-40. 
The complete Zyuranger series is due to be released in America by Shout! Factory in 2015.