Darwin and Newts are tidying up the treehouse and causing a real mess. Burpee gets upset, and heads to the big swamp to see his frog friend Croakette. But the swamp is far away and frogs need water - can Darwin and Newts save Burpee in time?
Wapiti gets blown away, so Darwin and Newts must use the power of wind to rescue their friend.
When Darwin and Newts use the zip line to take Heni to see an incredible giant snail, a malfunction is overcome thanks to their newfound knowledge of magnets.
Darwin and Newts give Heni a hand in her garden with the help of their friends - the worms.
When Burpee gets sore legs from dancing with Croakette, Darwin and Newts help by learning how to catch bugs for his lunch. In the process, they observe that the sun casts shadows, which helps you tell the time of day.
Darwin and Newts want to touch a rainbow so go on an adventure to catch one. They discover what is needed to make a rainbow, and Heni creates one especially for them.
Darwin and Newts are puzzled when no one shows up for Wapiti's Antler Day party. Finding some footprints they follow them to find where everyone has gone.
Darwin and Newts have fun making craters with Newts' new catapult invention, and solve the mystery of the disappearing moon.
Darwin and Newts go fishing, but when Darwin's lucky fishing hat ends up in the river they must work out how to get it back.
Wapiti takes Darwin, Newts and Heni on an adventure to discover creatures that are awake and active at night.
Darwin and Newts build a rock wall so Burpee can have some privacy.
When Heni and Darwin discover blue ducks nesting by the stream, Newts invents a periscope to let them get a closer look.
Wapiti challenges Darwin and Newts to learn about how some creatures use camouflage before he lets them play hide and seek with him.
The team experiment with ways to lift a giant pumpkin up to the treehouse - eventually succeeding with a rope and pulley.
Darwin records a butterfly's life cycle when his swan plants attract a caterpillar that becomes a chrysalis, while Newts figures out how to paint a butterfly with symmetrically-patterned wings.
When Burpee's cousins come for a visit, Darwin and Newts discover how tadpoles turn into frogs.
Darwin and Newts help teach Kea's young nephew how to fly, and along the way learn how birds take to the air.
Darwin and Newts learn about tides when they build sand castles out of wet sand and find they've disappeared the next day.
Darwin is confused when Kea knocks over his seeds, so he must grow the plants to find out which seeds make which plants.
Darwin and Newts work together to utilise the power of gravity to get Heni's apples from the top to the bottom of the hill.
Darwin and Newts find an old log full of various insects across a forest path and build a bridge over it to protect it.
Inspired by a spider, Darwin and Newts build a web-like trap to nab a food thief, and find it is a hedgehog preparing to hibernate.
When Newts mixes all of Heni's paints into one colour, the kids decide to create new paint from the natural substances they find around the garden.
Darwin and Newts learn about sound and vibration when Newts becomes obsessed with drumming. Darwin takes what they've learned to make a home-made telephone.
Newts tries to preserve some ice from a frozen pond to make Burpee and Croakette an ice skating rink, and she and Darwin learn about the different states of water.
Darwin and Newts learn the environment needs protecting from plastic bags when they rescue a little blue penguin who got stuck in a plastic bag.
Darwin and Newts discover how a balloon moves when air rushes out of it and use their discovery to build balloon-powered cars.
Darwin's wish to lead a successful expedition comes true when he and Newts stumble over the egg of a giant, extinct bird.
Darwin and Newts discover what a fossil is and make their very own special fossil handprints.
Burpee wants to jump further than Croakette in the Annual Frog Jumping Contest, so Darwin, Newts and Heni help him train.
Newts and Darwin pretend to be pirates and Newts wants to hide some treasure, so she and Darwin have to draw a map to find where X marks the spot.
Darwin and Newts compete in Heni's Five Senses Games and discover that they are good at different things.
Darwin and Newts have fun when it snows in Kiwifruit Valley and discover that every snowflake has six sides.
Darwin and Newts observe different cloud shapes in the sky, and Newts lets her imagination run wild.
It's the Annual Big Bubble Festival at Kiwifruit Valley and Darwin discovers how to make the best long-lasting bubble mix for the big day.
Newts and Heni go searching for gold to complete Darwin's rock collection, while Darwin stays at the treehouse to grow crystals from his new crystal-growing set.
Darwin and Newts follow an apple tree through the seasons, becoming worried when it becomes sick in winter but learning that the tree's changes are part of a natural cycle.
When Darwin's garden starts drying out during a hot, rainless summer, the kids try different methods of watering it, eventually building an aqueduct using the water from Burpee's pond.
Darwin discovers how to write secret messages and with Newts' help plans a surprise for Heni.
Darwin and Newts are building their friend Pupurangi the snail a new home, but when the weather gets stormy they need to work fast.