Instructions
Log into your Poptropica account. Click on the Astro Knights Island icon, which is in the bottom left-hand side region of your map.
Get the gold coin from the rocket fountain in the main street and give it to the owner of the museum. You will find him to the left of the fountain. Get the library card from the museum and exit before traveling to the castle, which is further on to the right.
Enter the castle library and get the two books before clicking on the brick behind the "MCM" section. Enter the secret passage that appears and get the moldy cheese. Click on the lever on the wall before leaving.
Exit the library and go left before entering the room at the end of the hallway. Use the cheese to help your character capture a robotic mouse. Pick up the letter on the dresser before leaving the room and going up the stairs.
Enter the throne room and then speak to the king. After he informs you that you will be knighted if you can save his daughter, speak to the queen and ask her if she can think of anything else that might help. In return she gives you the knight's coordinates.
Exit the castle and continue on to the right. Get a bag of manure from the man holding a shovel and continue up the hill before entering the windmill.
Climb to the top-left area of the windmill and speak to the girl wearing gothic clothes. Take the cosmic symbols she gives you and exit the mill. Pick up the coil of rope to the left of the mill. Jump up on to the roof of the mill and enter the secret hatch.
Use the bag of manure once you are inside to power the hover craft. Exit the secret room and walk left until you reach the castle again. Jump up the window sills until you reach the ballista. Click on the rope and select "Use" to tie it to the ballista.
Fire the ballista at the doorway to the left to create a rope pathway. Walk across the rope and enter the door at the end. Get the note inside the treasure chest on the left of the room and then exit.
Walk all the way back left to the main street where the fountain is. Click on the golden plaque. Click on the crescent moon, ringed planet, five-pointed star and sun in order to open a secret passage. Enter the passage and then speak to the buck-toothed boy on the far right to get a key.
Exit the hideout and enter the museum on the left. Jump up to the top floor and click on the paper scraps under the bed to get a journal page. Exit the museum and return to the field near the mill where you previously saw two hay bales.
Stand in the middle of the two bales to fall down between them and reveal the trap door. Use the small key to open the trap door and then enter. Walk up to the mechanical owl to cause it to fly outside. Follow it and then open your inventory before clicking "release" on the mechanical mouse. The owl will become your friend after catching the mouse.
Go back down the trap door and get the journal lying on the chair. Walk to the left and push against the wall blocking your way to break it. Continue along the passage and enter the small hole at the end. After the scene with the exploding robot walk up to the bars and then click on the owl.
Click on the green fuel rod after your cursor turns into a crosshair and the owl will pick it up for you. Go back out through the hole and exit through the trap door. Walk to the right and then jump on the hovercraft before riding it all the way to the UFO.
Click on the UFO to enter it. Drag the fuel rod from the bottom of the screen to the slot below the "Launch" button. Turn the left dial until the reading next to the "X" coordinates is 56 and the right dial until the reading next to the "Y" coordinates is 52 as indicated by the instructions on the journal page you found. Click "Launch" to blast off into space and watch a scene of you crashing on the moon.
Walk to the left and enter the "Astrozone" building. Speak to the green alien inside and ask him how you can get off the planet. He will take your crashed ship in exchange for the ability to create your own ship on the holopad outside.
Exit the shop and walk left until you see the sign that reads "Create your own rocket." Click on the console to access the ship editor. Click on each ship part to cycle through the options until you are pleased with the results. Click "Done" to exit the design screen.
Click on your new rocket standing on the launch pad to the left to enter it. Click the "Launch" button to go into space. Fly to the right until the "X" coordinates on the bottom left-hand side of the screen read 82. Fly up until the "Y" coordinates reads 20. You'll find the Fire Planet covered in lava and volcanoes directly in front of you.