Mac and Billy, the twins, want to break the world record for the biggest pile of nuts and berries; they pick them up from around the park.

Fishtronaut and his friends learn about all the different ways that animals take care of their young.

Fishtronaut, Marina and Zico discover that some visitors have been chopping down lakeside trees to build a canoe; they fight erosion by replanting the trees.

Fishtronaut is a secret agent who along with friends Marina and Zeek, unravel mysteries occurring in the Smiling Trees Park.

Marina has been asked by her grandfather, Dr. Green, to take inventory of all the different types of wildlife in the park, but she's concerned that many of them are missing.

A strange odor is causing a stench in the park; a POP provides clues that lead the trio to a group of young campers who have set up a base camp in the park and have been discarding fruit and vegetable scraps on the ground.