At a confined, pixellated cottage, a kingly robot laments his loneliness and longs for a kingdom to rule over. A monkey toys with the device that traps the robot, setting him free. That day, the boys are out camping, but their food gets stolen by a peculiarly blocky monkey. They chase it into a part of the forest that is equally blocky, and enter a large mansion found there. It appears luxurious, with a banquet prepared on the dining table, and some of them start to help themselves to the food. However, the owner storms in to deal with the intruders.
He introduces himself as King Boxel, who Rubika states to be imprisoned in a tablet for turning a whole planet into blocks. King Boxel is angry with Rubika for keeping him in a crammed virtual prison for a century, and smashes the table when Rubika calls him "mad for land, power and blocks". The Mechalaser is ineffective against him, as lasers turn into blocky poles upon impact. King Boxel touches MechaBot, turning him into blocks. He can no longer combine with Amato, but he can mechanize with a block sword for Amato to use. King Boxel causes the floor to collapse with a shockwave, making them fall below.
The boys fall into a dungeon, where King Boxel turns the boys into blocks and cages them. Deep wishes that he stayed home instead of following on this trip, which tells King Boxel that there is more area out there he can make into his kingdom. After he leaves, the monkey from earlier appears again and helps them escape. With a car that Deep crafts via video game logic and is mechanized to function, they rush back to Kota Hilir to find the whole place turned into blocks. They head to the large castle where the A Famosa landmark is.
Amato and the others wear knight armor and swords crafted by Deep, and board Amato's Trojan Horse (which keeps getting called a giraffe) to get past the guards, but King Boxel already anticipated this when he let the "gift" in, and they're surrounded. They strike the soldiers down, but King Boxel makes them reassemble and rise again, so Mechamato (as a Mechaknight along with the armor and keris) pursues their boss. When his sword gets broken in the fight, King Boxel runs to the top of his castle to lure Mechamato to a booby trap that launches him off the balcony.
King Boxel approaches the fallen heroes with a regenerated sword, but he slips on a banana peel left by the monkey. Amato gets the idea to mechanize their trojan vehicle, which MechaBot calls the Mechagiraffe. He chases down King Boxel to land his own head over him until his block-making glove breaks, reverting all back to normal. Amato captures King Boxel, but inside the Mechanizer, he finds way more robots to become friends with.
This episode provides examples of:
- Art Shift: This episode features King Boxel, who can change anything he touches into blocks, turning them into a pixelised 3D form that moves in a staggered manner alike that of figures in arcade games. This coexists with the standard animation style of more fluid mobility.
- Camping Episode: "Block World" features the boys of the main gang on a camping trip in the woods, where they find King Boxel's bizarrely blocky home after chasing a monkey that finished their food.
- Ground Punch: King Boxel strikes the ground of his mansion with his fist to break the entire living room floor, causing all of his opponents to fall into his dungeon below.
- Midas Touch: Anything King Boxel touches with his gauntlet turns into blocks like himself. He intends to turn as much territory as possible into blocks to build his own kingdom, and has even converted an entire planet before. When his gauntlet is broken, all the block-related changes are undone.
- Prison Dimension: Rubika had King Boxel trapped inside the digital space of a tablet for a century as punishment for turning a planet into blocks. A monkey plays with the tablet and accidentally sets him free.
- Trojan Horse: Amato, Pian, Deep and MechaBot construct a large wooden horse to hide in and infiltrate King Boxel's castle. However, Amato's poor drawing skills while drawing out its construction plan makes it look more like a giraffe. King Boxel is prepared with soldiers around the vehicle to fight whoever may be hiding in there.
- We Can Rule Together: In the middle of their sword fight, King Boxel compliments Mechamato's fighting skills and offers him the chance to be his most distinguished knight should he join his kingdom. Mechamato affirms that he will never join him.
