The PlebDevs backend course appears to be a comprehensive program catering to JavaScript learners aiming to become proficient backend developers. The course particularly focuses on Lightning App Development and covers various aspects such as NodeJS, building servers/APIs with Express, authentication, Lightning node setup, database fundamentals, integration, and deployment. It's suitable for JavaScript enthusiasts, aspiring Bitcoin/Lightning app developers, career changers, tech hobbyists, students, and anyone keen on understanding backend development from scratch. The course offers payment options via Bitcoin on Emeralize or fiat currency on Udemy, with code and slides available for free on GitHub for those seeking open resources.