Inside the Flab Zone, Bowser's extra fat makes platforms closer together to form steps so they can be climbed. To the left is a Retry Clock and to the right is a Save Block. Up ahead are Attack Pieces. The floor ahead is springy. New enemies called Tenderlings are here. Watch how high they bounce to determine if you need to jump to dodge their attack. Flaming enemies called Calorites also appear.
In the next area, the bros hear a scream. Peach is being attack by something. She's relieved to see the bros. She was looking for the exit when she was attacked. The enemy swarms her, picks her up, and carries her off. The bros follow them and Luigi falls into the mucus pool. Someone laughs and pulls Luigi out. This entity is Princess Lipid, referring to themselves in the plural. They ask if Mario dropped Luigi into the mucus pool or the treasure of e'erlasting wonder, which they hold. They present the options with no time to answer and assume Mario wants the treasure. Mario disagrees, saying his brother is better than the treasure. Princess Lipid tosses him back and give the bros the treasure, saying honesty begets fortune. The treasure is a pair of badges. Starlow says that badges will give them special effects in battle. A Tenderling appears from the treasure chest as well. Starlow fully heals the bros and Princess Lipid appear. The badges are equipped and they fill the meter to almost full. The meter fills up with each successful attack. Excellent attacks fill the meter more. When it fills up, touch it before selecting a command block. The badge they have equipped restores both bros' HP. Using the badge drains the meter completely. There are different types of badges out there. You can change the badge in the middle of battle with the command block. Swap the badges with [L] and [R] until you get the combination you want. The badge Luigi equips determines what level of attacks (OK, Good, Great, Excellent) will fill the meter and Mario's determines the effects.
Keep going to the right. The path will split. Go into the red pipe first. Across the springy floor is an item block. You'll need to volley it between the bros by hitting it 15 times. When you complete the challenge, it will give you four Attack Pieces. Go east, then take the lower red pipe near the blue Emoglobin. There's a Save Block and an item block to volley. It also gives you four Attack Pieces. Go south via the green pipe and hit the bulge coming out of the floor. It releases a tornado. Starlow thinks the bros can use it by jumping in the middle of it. It's Spin Jump time. Cross the gaps and mucus pools to the left to reach the last Attack Piece. The bros can use the Jump Helmet attack. Mario jumps from a trampoline that Luigi wears as a helmet. Mario jumps and Luigi moves forward so Mario can land and jump again until they reach the enemy. Mario will then jump on the enemy. This Special Attack is a little tricky and prone to failure. Go south via the green pipe, then go west, hitting invisible blocks to the right of the tornado. Use the tornado to cross the gap. Go south through the red pipe.
Send Mini Mario under the gap and spring up. There's a switch on the right wall. Jump from the springy floor to make invisible blocks appear so you can hit the switch. This uncovers a super springy floor. Take the red pipe south. Spin jump to the pipes and take the green pipe south. This will take you to a room with a couple of item blocks and a Save Block. Heal and save, then go east.
The bros find the enemy with Peach up ahead. Starlow doesn't think jumping or hammers will free the princess. A Spin Jump removes them and the princess collapses. The enemy returns, opens its eyes, and gets into an attack formation. Starlow wants the bros to battle while she protects the princess. Luigi wants to trade places with Starlow. She is not amused and knocks Luigi into the enemy.
This enemy is Alpha Kretin. Each of its six pieces is colored red or green. Only the bro of the same color may damage the sphere. When each sphere is hit, it and the surrounding spheres change color. Try to be strategic in the ones you attack so each bro can attack. When it takes enough damage, it turns blue. Alpha Kretin will fire energy balls at the bros. Watch the light travel through it to know the order and frequency of attacks. Use hammers to stop the attacks. When all of the spheres turn blue, the formation will fall apart and only a Beta Kretin will be left. It will create copies of itself so there are six in total. They'll surround the bros and send electricity to each other. Jump if a bro is in the path of the electricity. Before you can attack, the real one will flash, then shuffle around with the others. Keep an eye on it so you can attack it. After a few attacks, it will become Alpha Kretin again, in a triangle formation. Keep attacking it as before. Odds are, you'll level up after defeating it. When the bros reach level 12, they'll rank up to Flower Rank, where they can equip three pieces of gear.
Alpha Kretin explodes once you defeat it. Peach is thankful. She wants to find a way to escape. Luigi doesn't think there might be a way out. Starlow notices there's a room up ahead, so she'll strategize with Peach while the bros check it out. Peach follows them into the new area, saying it would be best to just explore it. It's a dead end. Starlow suggests waiting until Bowser's body experiences a change.
Outside, Bowser is throwing himself a pity party. Suddenly, he feels ticklish. "I HAVE CHORTLES!" Under the floor, in the basement, Fawful is firing a ray gun at Bowser. "First, your beating of Midbus! And then, the chubbening with the special dishes of tastiness! All in my master planning! Oh, I have such chortles! There was a slight changing to my perfect plan! Yes, Fawful said "plan." A plan of Bowser inhaling Peach, sending the Mushroom Kingdom into the hands of Fawful! But now for the changing. I am needing the princess!" Bowser asks if he inhaled her. "Fawful tells you yes. But now I am needing her right this instant! Come out for the playing! Come to Fawful!"
Starlow wonders what Fawful would want with Peach. Peach says Fawful may be looking for the Dark Star. Peach explains that a star sleeping below the Mushroom Kingdom was dug up that hid a great evil. If an evil entity found the Dark Star, the world would plunge into darkness and the evil entity would rule the world. The Star Sprites sacrificed much to seal the Dark Star under Toad Town. Fawful needs Peach because she's the only one who can break the seal. Luigi freaks out. The ray gun's effect intensifies and a loud noise is heard in the room next door. The bros check it out. A light flashes from the ceiling. Peach and Starlow followed because they were worried. Big mistake. The light takes the form of a hand and points over each one of them, until it reaches Peach and grabs her. All three of them freak out.
Outside, the ball of light drops Peach on Fawful. "Such ruh-rounded chubbening on your buh-body, Bowser! Buh-but Fawful gave you the Puh-Princess Peach diet! Huh-heavy..." Bowser wants him to put her back. "And nuh-now! All preparations have cuh-completion! At the long last, we buh-begin the fuh-furious Age of Fawful! Buh-Bowser! You are needing to huh-hit the gym!" Midbus brings in a treadmill. Fawful slowly carries Peach off, saying, "Huh-heavy... Muh-Midbus! Help! Midbus! Come!" Midbus leaves without him. "MIDBUS!"
Bowser finally falls through the floor and lands on the treadmill. His legs start running by themselves, increasing in speed. He feels and smells the burn, as his legs are literally on fire. He burns off the accumulated fat and hops off the treadmill, still on fire. He reads the sign that tells him he is in the Bob-omb Storage Depot, but not before he lights a fuse. The blast sends him out of the castle, back to Cavi Cape, and he falls into the hole near the Chakroad. There is a Save Block and shop monitor.
