Firstly, I just want to say that if you go inside the Carrot King Diner right at the beginning, and drink a drink from there, you can change your hair color! :D Anyway, when you first arrive, go talk to the mayor. You don't have to, but if you want the story, you should. Then go to the farm. Go down the house's chimney and grab the empty bowl by the couch. Go back to Carrot King Diner and ask the lady with the milk if she can fill up the bowl. Once the bowl is filled with milk, go set it inside the house. You now need to chase the cat out. He is in the bathtub, and so you'll just need to turn the water on. He will immeditely go down to the milk. Go down to him, and he will now follow you. His name is Whiskers, by the way. Wouldn't it be cool to have pets like this all the time that can go on any island with you?
Go back out through the chimney, and then go to Charlie's Carrot Supplies Co. and give the lady her cat. She will give you a crowbar as a token of her appriciation. When you exit, get to the Carrot Cake Factory and climb around until you get the blueprints hanging out of a window. You can use mine, but it isn't as helpful.
Now go to the green toxic water. You will find, like, a blocked sewer pipe thing there. Use the crowbar to unblock it and get inside. Once inside, you will see this:
You can choose wether or not you want that carrot transporter, but it's not really needed. It's cool to have, though! Anyway, to get past this, you simply don't fall. xD Yea, though. It's kind of hard. Just keep trying. Once past, you come across a rat. Simply go into the pipe above him to avoid him. Once past him, go up. You will come into a darkened room. To turn on the lights, go to the control on your left and put the controls in this position:
Find the giant moving metal claw and jump on it. Ride it to the other side of that gap there. You will find a vent. Go in it. Now this is where having your own blueprint comes in handy. It will tell you where you are. The one I posted aboce can't do that for you, but it is still handy. Anyway, you will need to find the wire cutters. You can find them on the way to the processing room. Enter it when you get them. A littel robot bunny head will zap you to the freezer. While you are there, cut the Security System wires. Hop up the tall stack of crates to the vent. Get back to the prosessing room now. The robot wont zap you now since the security is disabled. There is also a password you are supposed to get, but I will save you the trouble and just tell you that it's fuzzybunny. Go through the door that says Authorized Bunny Drones Only. You will fall through the trap door since you are not a bunny drone. Avoid the crushers and hot carrot juice to get to the pipe. Before leaving, grab the bunny hat and then go up the pipe. Once out, put the hat on and go back to the door. Thinking you're one of his bunny drones, Dr. Hare will tell you to launch the Rabbot, the giant robot rabbit. Climb to the top of Rabbot and you will see a boy and a computer to your right. Click on the boy and say, "Look, a giant bunny!" When he turns around, turn off his hat. Then click on the computer. It will say to enter a password, and so you enter fuzzybunny. For the command, you enter launch rabbot. You control the rabbot, so you must crash it into three or four astroids. Dr. Hare will yell at you each time.
Now you can follow that boy out.
Now talk to the mayor and he will give you your medallion. :3