When Aviva's new Time Thruster invention gets attached to a migrating salmon, the Wild Kratts must follow the salmon run through the Alaskan wilderness to recover the Time Thruster.
With Aviva's new submarine the Wild Kratts head down deeper than they have ever been before into the sea to discover bizarre creatures and maybe even a new species. But Chef Gourmand is also looking for rare sea creatures down there.
When Aviva experiences an invention slump, the Wild Kratts team is determined to help. They take her down the mysterious Amazon river in search of inspiration from the amazing creatures that live there.
The Kratt brothers discover an amazing small creature with loads of creature power; little do they know they'll depend on this creature to get out of a grave situation.