In a small and peculiar town, a young man named Jimmy finds himself trapped in a bubble due to a rare illness that makes him allergic to everything around him. Since childhood, he has lived protected and isolated, with his overprotective mother making his life as comfortable as possible within his bubble home. However, when his mother embarks on a new romance and decides to grant him a bit more freedom, Jimmy begins to feel a burning desire for freedom and to experience the world.
Motivated by a platonic love for a girl named Chloe, who sends him letters through the window, he embarks on an epic adventure to escape his bubble and search for happiness. Thus, Jimmy sets off on a road trip, encountering all sorts of quirky characters and zany situations while trying to reach the city where Chloe's grand wedding is to take place. His journey is a whirlwind of craziness, filled with humor, but also tender moments that reflect his struggle to find his place in a world that has been denied to him.
Throughout his journey, Jimmy realizes that while the bubble protected him from external dangers, it also isolated him from the beauty of life itself. In the end, he faces the choice of continuing to live inside his bubble or risking it all to truly feel alive.