Yvette welcomes 12-year-old Randy to the Silly Warm Up Round featuring two experts on Knitting. Louis demonstrates two classic stitches, while Agnes reveals her hardcore knitting style. CLIVE cranks some heavy metal music to accompany her. Oddly enough, one of Randy's favorite hobbies is knitting! CLIVE introduces the main topic, The Ocean. The experts are Paul, a Marine Biologist, and Graham, an Ecologist. Paul claims that man has spent more time on the surface of the moon than in the deepest parts of the ocean. Graham says that the Great Barrier Reef is the world's largest animal. CLIVE shows a video of a weird squirmy thing which the experts convincingly explain, but only one of them is right. Can Randy swim through the lies to find the fibber?

Yvette welcomes 10-year-old Emma Faith to The Big Fib. In the Silly Warm Up Round, Emma Faith must decide if the Dream expert is the Sandman or a really interesting adult named Alice. Later, Yvette learns more about Emma Faith but CLIVE mistakes the bird on her head for a hat. Max and Jonathan both claim to be Killer Plants experts. Max is a Botanist, who reveals some interesting facts about Killer Plants.  Jonathan says he owns a Killer Plants nursery. Could there be such a thing as a nursery that specializes in Killer Plants? And most importantly, will Emma Faith be able to tell who is the expert and who is the fibber?