Gav plays a deviously brilliant prank on Ricky, so he decides to get his own back using six thousand cups of juice. All this with a helping of ninja art - a fake plaster cast, a 3D initial and some lovely prank soap.

Gavin won't stop playing games on Ricky's phone and despite his best efforts Ricky can't distract him. Meanwhile Ricky's latest art creations are a fish bat and ball, a catapult inspired by da Vinci and some epic art with remote control toys and plenty of horsepower.

Gavin brings round his new pet, Spider, and Ricky is terrified. After making butterfly art inspired by Damien Hirst and weaving a ninja rug, Ricky has to run for his life when Spider escapes. Once in the woods, to try and overcome his fear, Ricky makes a sculpture with items he finds on the forest floor.

Something sparkly and expensive is accidentally delivered to the flat, and Ricky thinks a scary man now wants it back. Ricky makes a photogram inspired by Man Ray, a piggy bank robber and a very precious and extremely cool ice sculpture.

Ricky wishes he could go back in time after spilling paint on a priceless rug, and when he downloads App to the Future he realises that anything is possible! Ricky meets Gaudi to make a salt dough lizard, and he learns how to create wings for his shoes. Also, he produces art with vacuum cleaners that definitely doesn't suck.

Ricky orders a takeaway, but will his fortune cookies' predictions come true? After making a dragon bike basket and using a pizza box as a canvas, Gavin arrives with a mysterious map that leads him to animate a monster of a picture.

Ricky is looking after his baby niece and has to use his ninja skills to try to keep her amused. While left holding the baby, Ricky makes a cute critter toy and a mobile inspired by artist Calder. Also featuring some epic art made out of toilet rolls.

Ricky decides to form a band, but the instruments he orders don't quite fit the bill. It doesn't stop Ricky making musically themed art, including a paper-cup boom box, a guitarist sculpture inspired by Giacometti and an awesome music video with Gavin, Sarah and some serious slo-mo!

Gavin turns up at the flat, but Ricky thinks there's something a bit strange about his mate. After making a mooncatcher with ice and a monster foot pencil holder, Ricky realises he might have got the wrong end of the stick, and they use a light stick to make out-of-this-world digital art.

Ricky decides to get in shape and makes healthy art, including fruit pom-poms and a salad-face place mat. Ricky tries to sign up for some ninja fitness classes, but ends up making some revolutionary art and facing a bit of a high jump!