Giant Insect Park tells the story of three children who board a cruise ship during summer vacation. During the voyage, they are taken away from the ship by unknown creatures and stranded on a deserted island in the vast ocean. This mysterious island is filled with abnormally enlarged flora and fauna, with giant insects being the dominant inhabitants and the greatest threat to the children. In order to escape the isolated island and return to civilization, the three children embark on a series of self-rescue efforts, battling relentlessly against nature and narrowly escaping the jaws of giant insects multiple times. Along the way, they frequently encounter an elusive indigenous girl whose allegiances remain unclear. As the three city-born teenagers and the indigenous girl delve deeper into their perilous escape journey, the mysteries hidden for centuries within the island’s dense forests will gradually be unveiled.