A girl na­med Da­rin­ka me­ets a brow­nie na­med Kar­lush­ka in a spa­ces­hip. Sud­denly a spa­ce storm starts which ta­kes them to a stran­ge pla­net. Is it in­ha­bited? Who are the gre­en ali­ens? How can Da­rin­ka and Kar­lush­ka re­turn to the Earth? The bo­ok is full of il­lust­ra­ti­ons, puzz­les and step-by-step ga­mes that de­velop the lo­gical thin­king and at­tenti­on of child­ren.