Park Eun-gyeong, an environmental preservationist began an illustrated journal of the Jingwandong Marsh in Mount Buk-han National Park in an effort to study and guard the place. Since 2005 until now, she has recorded the changes that took place in the marsh and the diverse life forms that live there during all four seasons. 

The sound of a leopard frog leaping into the puddle, the neatly laid eggs of the turtle dove in the nest, the willow seeds that fly in the wind like snowflakes, and the rowdy tales of all life forms provide a breath of fresh air to those of us who live in an urban setting. The author expresses her affection for them all and shares the joy and meaning of co-existence with them. At the same time, she shows her concern for the damage done to the marsh from all the trash and garbage people dump there, as well as the ongoing construction of buildings that is taking place, calling for more attention from the people to preserve this precious space. Readers will discover in this book just how many diverse life forms live alongside us.  

The author did swift sketches of all the living organisms so as not to miss a single one. As a result, we are able to witness the endearing sights of the stinkbugs, slipping out of its last molting, the mating beetles, and the birdsong spider that rolls itself into a ball. The author presents a heartwarming and amusing view of many different living organisms through her writing and illustration.