Mack & Moxy head to HelpeeLand National Park with Trooper Tigran. They're welcomed by Ranger Rosey, an extroverted outdoor enthusiast who is delighted to introduce them to the wonders of nature. Along the way they breathe in the fresh air, explore the terrain, discover different types of plants, learn about the park's history, and take photos to share, inspiring others to enjoy the majestic lands. But sharing doesn't work for Shelfish Sheldon, who scrambles to the Great Helpee, set on keeping all its happiness for himself.