▁society ▁in ▁most ▁of ▁books ▁is ▁shown ▁as ▁a ▁commun ist ▁u top ia : ▁there ' s ▁no ▁need ▁for ▁money , ▁environment ▁is ▁strictly ▁protected ▁and ▁everything ▁is ▁done ▁for ▁the ▁benefit ▁of ▁humans ▁( some ▁later ▁books ▁of ▁the ▁series ▁contradict ▁with ▁this ▁model ▁at ▁least ▁regarding ▁money ). ▁ ▁Al isa ▁is ▁a ▁te en age ▁Russian ▁school g irl ▁with ▁deep ▁interest ▁in ▁bi ology ▁and ▁a ▁number ▁of ▁h obb ies ▁( such ▁as ▁viol in ▁playing , ▁" b ubble ▁racing " ▁etc .). ▁Her ▁father , ▁Professor ▁Se lez ne v , ▁is ▁a ▁space ▁bi ologist ▁and ▁director ▁of ▁Moscow ▁Cos mo Z oo . ▁The ▁hero ine ▁is ▁a ▁curious ▁f idget , ▁she ' s ▁interested ▁in ▁any ▁sort ▁of ▁mystery , ▁either ▁scient istic ▁or ▁detect ive . ▁In ▁the ▁stories , ▁Al isa , ▁her ▁friends , ▁and ▁occasionally ▁her ▁father , ▁travel ▁in ▁space ▁and ▁time , ▁explore ▁distant ▁plan ets , ▁deal ▁with ▁al iens , ▁fight ▁space ▁pir ates ▁and ▁make ▁scientific ▁discover ies . ▁ ▁Al isa ' s ▁family ▁is ▁formally ▁model led ▁after ▁that ▁of ▁the ▁author : ▁he ▁actually ▁had ▁a ▁daughter ▁named ▁Al isa , ▁and ▁the ▁hero ine ' s ▁parents ▁are ▁named ▁after ▁real ▁names ▁of ▁Bul y chev ▁himself ▁( I gor ▁V se vol od ov ich ▁Moz he y ko ) ▁and ▁his ▁wife ▁( K ira ▁S osh in sk aya ; ▁the ▁respective ▁character ,