Summary
US Title: Flood Fight

The episodes starts with Mr. Stuart reporting in that Chris is still missing as the children are having fun. He joins in on the game making a slam-dunk. The kids think he is an awesome teacher. Chris meanwhile is inside Tails' workshop thinking that they have just gone off for the day knowing that Sonic will be happy that he has a Chaos Emerald.

On the island Sonic and Tails come across Knuckles who is standing in front of a fallen Eggman. Knuckles says he's done nothing as Tails pokes him with a stick. Eggman wakes up and explains that Chaos is now on its own. Becoe and Decoe appear with a balloon and take Eggman off into the air to track Chaos down. Knuckles says they have to hunt down Chaos as Sonic and Knuckles are taken into a vision. They watch as Tikal pleads with her father to stop taking the emeralds. They attack knocking Tikal and the chao onto the ground. As the others go towards the shrine the Chaos Emeralds appear around the Master Emerald and Chaos is formed. The tribe is blown back by the power released as the shrine goes into flames. Sonic and Knuckles find Tikal and make sure that she is okay. She runs towards the Master Emerald and deciphers the riddle of the emeralds and pleads with the two to stop Chaos. Sonic and Knuckles wake up and Tails is left standing rather confused as Chris appears holding the final emerald.

He is taken by Chaos as Sonic jumps in and grabs Chris. Knuckles breaks a hole and Sonic and Chris land on the ground as part of it breaks open. Knuckles now knows that Chaos has all seven emeralds. Sonic is rather upset and says they will try to stop Chaos. The chao appear and seem rather upset themselves. While in the city the sewers begin to flood Sam who is the process of giving a warning sees the destruction as the city floods with thousands of gallons of water. Perfect Chaos takes form as the President stands watching the destruction as the cameras show Perfect Chaos. The president authorizes the use of any force needed. Ella and the others watch TV as Cheese throws a fit as Chuck orders them to leave, but Chris has not come home so they stay.

Tails and Chris fly the X Tornado as Sonic races towards the city as Chaos continues to destroy the city. Stuart is ordered to return to head quarters but decides to stay and help the kids instead of returning. Tanaka decides to stay at the mansion as the others leave the place. Everyone stands on various tall buildings and watch as the military comes in. Their weapons of course have no effect on the monster and it uses the missiles back on the planes knocking them out of the sky. Meanwhile Eggman powers up the second Egg Carrier and takes off while Sonic spots Perfect Chaos and tries to attack the monster but is knocked back. Sonic continues his assault but is thrown around by Perfect Chaos. Chris grabs Sonic as Tails flies in and Sonic tells Chris that he will be able to stop Chaos. As Tails flies in the second Egg Carrier appears in the sky. Eggman says he will destroy Perfect Chaos however the beast fires a beam and the Egg Carrier is destroyed sending Eggman flying. Sonic losing hope sees a bright light shown as the X Tornado is landed on the ground.

He hopes onto the road as Tikal appears saying she has tried to keep Chaos in check but Eggman awakened it. Just then Chaos spits out the Chaos Emeralds draining their power. Tikal says they have to seal him back in the Master Emerald, but Sonic says it will only happen again. A few minutes later Cream and the others appear with the dulled Chaos Emeralds and offer them to Sonic. Knuckles then orders Eggman to hand over the dulled emerald as Chris appears with the final emerald. With some cheering and high hope the emeralds regain their power and Sonic is able to transform into his super form. Tikal says she thought the power could only be used by hate and anger but the others say love and caring powered the emeralds and it is stronger.

Super Sonic then begins his own assault on Perfect Chaos dodging the blasts released by the beast and blocking one that almost hit Chris and the others. Everyone watches on as Super Sonic stands before Perfect Chaos. Super Sonic uses his strength and begins to dissolve the monster and with a large punch he causes Perfect Chaos to explode with a cheering crowd. Super Sonic powers down as Chaos reforms back into its original state. Cheese and the other chao appear and surround Chaos. Knuckles and the others have a feeling that Chaos is no longer angry and is rather happy. Tikal steps forward and tells Chaos that the Chao are now safe and happy and in peace. The two lift off into the air and disappear in their own light. Sonic stands watching as Eggman has escaped while they were distracted. The episode ends with Sonic giving a thumb up.