As Lulu completes his studies at the Hero Academy, he is eager to demonstrate his heroic abilities to a society that has consistently underestimated him. Embarking on a grand quest to defeat the fearsome and mythical dragon, Lulu envisions a journey filled with adventure, valor, and perhaps some romantic encounters. However, his plans take an unexpected turn when his doting and overly protective grandmother insists on accompanying him. What was meant to be a liberating and thrilling expedition transforms into a family outing that challenges Lulu’s patience and resilience to the utmost.