Sam, Vick and Frankie learn about how water can bend metal, and meet a parkour family. Sam also spends time with scientist Doctor HOW, and there's a dance off ran by the head of HOW, original series presenter Fred Dinenage.
The team take part in a cake decorating challenge, and look at fluorescent eggs, the accidental invention of X-Rays, plus "the grossest thing ever to be seen on How".
The team take part in "Fred's Finale", where they are challenged to see who can wrap presents the most effectively. There's also a look at the colour of a geyser, flying holograms, and how a net can stop water.
Champion figure skater Ava Mae Wilson demonstrates how she can spin faster on ice, Dr. HOW shows the brightness of sugary sweets, and Fred challenges the "Hubsters" to guess hidden items in a box.
Join Vick Hope, Sam Homewood, Frankie Vu and Fred Dinenage as they discover how the colour blue came from the loo, demonstrate just how strong hair is, and paint a quick pic.
Frankie and Vick discover how to pinch a piece of pizza, Doctor HOW shows Sam how to see a song, and Fred's gone potty as he asks how you throw a pot...
The team discover how to keep a big bag of crisps fresh with wet wipes and how to un-crush a can of drink, and Fred invites a pizza expert to make a pizza in record time.
Vick, Sam and Frankie are feeling competitive as they find out how to race bugs, Sam gets gross when he asks how gruesome your face is, and food gets dangerous with Doctor HOW.
Sam shows the team how to tuck into a tasty worm treat, Frankie explains how a mistake rewrote a famous fairy tale, and Vick shows Frankie how balloons go bang with cotton wool.
Doctor HOW demonstrates how to make explosive crisps, Vick and Sam stop two tractors with nothing more than paper, and the team have a decorating challenge disaster.
Vick Hope discovers how dust can combust, Sam Homewood shows how quick he can be on a khazi, and Frankie Vu asks how a cupcake can catch a thief.
The show that asks questions beginning with How. The team discover how to change your hair quickly, how colourful a dump is, and how robots can cause a riot.
Vick, Sam and Frankie attend a red carpet solo cinema experience and discover how to drink dino wee, and things get hairy when they learn how to survive a massive shock.
Frankie Vu discovers how salt can destroy a tank, Vick Hope proves how cream can catch you out, and Sam Homewood explains HOW you can eat a mouldy sandwich.
Join Frankie, Vick and Sam as they ask how bling 'wind' can be, how long an egg is, how a tornado can toast a marshmallow, and learn how a sheet can stitch you up.
Sam, Frankie and Vick ask how pants a cannon is, how showbiz a sandwich is, how creative a cup is, and blow up a work of art for Head of HOW Fred Dinenage.
Join Sam, Frankie and Vick as they discover how a car can scratch your back, are shown how to shake a sundae, and go large in Head of HOW Fred Dinenage's challenge.
Frankie Vu and Vick Hope ask how a can can do the cancan, Sam Homewood shows a slick idea to store your stationery, and there's a hair-raising final challenge.
Sam Homewood shows how a tattoo can be 'armless', Frankie Vu explains how a buffoon can play the bassoon with a balloon, and Vick Hope asks how you can live forever.
Frankie Vu shows how to drink from an umbrella, Doctor HOW shows off ultimate pumpkin carving, and Vick Hope introduces the team to a clever illusion to hide numbers.
