A frozen road trip. Relentless secret agents. And a Jack Russell Terrier who just drank from the Holy Grail.

Hidden for centuries, an ancient cup possessing divine grace was tucked away to protect it from a shadowy power known as the Organization. But the secret is shattered one winter day when a Jack Russell Terrier named Mrs. Henry takes a sip from a stranger's battered cup.

Suddenly armed with the ability to speak and a host of supernatural powers, Mrs. Henry and her best friend Mark are thrust into a high-stakes game of cat-and-mouse. Their unlikely ticket to freedom? A guitar-slinging musician named Bob from Dinkytown. Together, the trio embarks on a magical, cross-country escape toward the gritty alleys of Greenwich Village.

But Mrs. Henry's new powers are acting like a beacon to their enemies, and time is running out. As the roads get slicker and the agents close in, Mark and Bob must help Mrs. Henry keep the cup safe - or they risk losing it forever.

Buckle up for a fast-paced 1960s adventure packed with humor, heart, blues-fueled detours, and a dog who takes absolutely no nonsense.