Rebecca and Murphi are dealing with a glut of carrots from the vegetable patch, and they have made everything from carrot cake to carrot juice. This inspires Murphi's first idea – a carton bunny rabbit. The Mini Monsters are making colourful caterpillars, and Rebecca's uncle is snug as a bug in his woolly cardigan when he calls her on the Magic Monster Mirror. The Recycling Express brings an empty box, which Rebecca and Murphi transform into a cardboard kitty cat. 
 

No, Rebecca isn't wearing a box on her head - she's dressed as an astronaut! This gives Murphi an idea. He helps Rebecca discover alien life by creating an alien out of a sock. The Mini Monsters are making skyscapes, Rebecca's royal relative is looking for something, and the final mega monster make is another space-inspired creation. The Recycling Express and the Tiny Helpers support Rebecca and Murphi as they reach for the stars.