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Spring has brought Lizzie Carbon not only new challenges at school, but also love. And how could it be otherwise at her age? First love, first jealousy, so how can you not do something stupid, or at least the kind of stupid that Lizzie is so good at. However, no one in her family is immune to love's eccentricities, her best friend Christine is also craving a boyfriend, and for the first time, the excellent student Dlubanko is interested in something other than studying...

Everything is very confusing, but in the end Lizzie solves this equation and finds all the unknowns in it.