Kepaku Valley Quarry

Kepaku Valley Quarry is a place in Planet Windara where the adults from Kepaku Valley were kept and taken labour from.

Stranded!
BoBoiBoy and Fang along with Papileon head to the grounds of the Kepaku Valley Quarry, where the adult residents of Kepaku Village are arrested for being forced laborers with very cruel treatment. Silently they sneak into the quarry through a secret path known to Papileon, until they arrive at the mineral storage room and meet Papilon's grandfather Papiliam, the foremost blacksmith on Planet Windara.

At the same time, Muskida's ship had landed at the quarry building. BoBoiBoy, Fang, Papileon and Papiliam take the opportunity to spy on Muskida's activities who get the message that Kuputeri has been taken to Kupuri Palace. Later, they saw a prisoner stumbling at work and begging for mercy from Muskida, then Muskida freed the bondage of the prisoner then released the crowd of his fly spies to devour him from behind. This cruelty triggers BoBoiBoy and Fang to act.

BoBoiBoy becomes Thunderstorm and chased Muskida with Lightning Speed assisted by Fang's Shadow Animals. After finding Muskida, the furious lightning element tries to slash him with his Thunder Blade but Muskida manages to escape.

After the fight was over and the victory was celebrated by the prisoners in the quarry, Papiliam denounced Fang as the son of Governor Gogobugi and the younger brother of Kaizo, in fact he said that he had heard of Fang's parents, in fact they must have been proud of Fang's devotion. Words like this makes Fang very sad. At the same time, Muskida appeared with his robot body and flew away. As a token of appreciation, Papiliam gives Fang a key to a room full of valuables in Kupuri Palace. Eventually, BoBoiBoy and Fang are contacted from Yaya who gives them the next coordinates to gather to plan the next action.