Ambitious but burned-out marketing exec Olivia starts early-morning walks with her spirited Shih Tzu, Milo, hoping to clear her mind. Across the park, solitary novelist Theo and his free-spirited Husky, Lucy, keep to themselves-until a tangle of leashes brings the four together. As Milo and Lucy's puppy love blooms, Olivia and Theo's guarded hearts follow, leading to comic mishaps, sweet surprises, and the reminder that the right companion-two-legged or four-can change everything.