A week after the battle with the Demon Bull King, MK, Mei, Tang, and Sandy were having time off at Sandy's Cargo Ship. However, when a crate falls on MK, he reveals that he's alright since he's invincible. Pigsy tells MK that just because he has the powers of the Monkey King doesn't mean he shouldn't be goofing off with them, but only for Mei to interrupt and says that every hero should have a base. So she takes MK and the others inside Sandy's Cargo Ship to show them their new headquarters, the Sea-Crate HQ.
Meanwhile, the Demon Bull King takes his anger out by destroying parts of the Flaming Foundry until Princess Iron Fan tells him to calm down. Red Son then says that he'll help the Demon Bull King get the power he deserves before heading out.With the help of the Bull Clones, Red Son breaks into the Weather Station to broadcast his plans, to control the City's weather so he can return the Demon Bull King to his former glory. When MK and his team notices this, they head to the Weather Station to stop Red Son. However, due to him still not having complete control of his powers, MK accidentally injures Mei and Sandy and knocks himself out of the Weather Station, allowing Red Son and the Bull Clones to capture the team.
After being knocked out of the Weather Station, MK meets the Monkey King again and asks for his help, but only for the Monkey King to interrupt, saying that it's no longer his job to fight off bad guys. When MK says that he had messed everything every time he does something, the Monkey King says that he needs self-confidence by practicing more, as it took him centuries of training and fighting off demons to do so. However, when MK says that the city and his friends are counting on him, the Monkey King says that he's able to limit MK's powers, but at the cost of him losing his invincibility. MK agrees and the Monkey King limits the former's powers.Once the Monkey King helped him get back to the Weather Station, MK fights off Red Son and the Bull Clones until he gets the idea to lure them outside. Once Red Son and the Bull Clones were hanging outside on top of the Weather Station, MK presses the lightning button, zapping Red Son and the Bull Clones. After defeating Red Son, MK restored the weather back to the way it was and tells the others that he'll practice more until he gets better control of his powers.
At the Flaming Foundry, the Demon Bull King continues to take his anger out until he discovers a blue light underneath the foundry.
Names in other languages