Meet Mack, the pup with emotions as big as his paws! At times, Mack finds himself overwhelmed by his feelings. His stomach is filled with butterflies, his legs grow wobbly, and he feels short of breath. Thankfully, Mack has his trusty sidekick, Gertie, to guide him through the tough times. Together, they explore ways to manage and overcome these powerful emotions. Through Mack's journey, children can learn breathing exercises, visualization techniques, and other self-regulation activities that can be practiced in their daily lives.