This paper presents a novel approach to teaching how vaccines work in the body, and introduces a community outreach project and activity we piloted with youth. Our Nuestra Ciencia program addresses scientific misconceptions among bilingual elementary school children in engaging and scientifically accurate ways. Utilizing analogies and storytelling, one of our lessons simplifies the complex microbiology concept of the mechanism of action of vaccines. We underscore the issue with conveying this concept through accurate visuals, supported by our research that revealed that less than 1% of cartoons available online accurately depict how vaccines work. The analogy we developed and showcase in this paper employs relatable characters: the virus as a robber, the immune system as a superhero, and the vaccine as a "most wanted" poster. The activities include a skit and storyboard session, enabling students to act out the analogy and create their own imaginative scenarios. By targeting young learners, this lesson aims to prevent long-standing misconceptions and empower future generations to make informed decisions about vaccination. Nuestra Ciencia offers a promising model for combating vaccine hesitancy and promoting public health through effective science communication.