『兄妹方程式』介绍:OwenandJamieareapairofnobodieswhopreventglobaldisasterswiththehelpofatime-transientcivilservant.Owen,acaretakeratthelocalschool,isapproachedbyashadowyfigurenamedMelvinwhilelockinguponeday.Melvinappointshim’CaretakeroftheWorld...BrightonandHoveDivision’.ButisthisMelvinreallyacivilservantfromthefutureorjustamadtramp?Aftersomehagglingoverascooter,JamieagreestobeOwen’ssidekickandsotheirmissionbegins:Thisinvolvestheconfiscationofsomehomebrewedbeerwhich,accordingtoMelvin,willbecomecontaminatedin2013.CuriouslyMelvinneedsitbroughttohiminorderto’process’it.