简介：Karen,amathsteacher,findsherselfinvolvedinatrafficaccidentforwhichsheisnottoblame.Theaccidentcausesthedeathofagirlonascooter.Althoughinnocent,theyoungwomanisdistraught,moresowhenshediscoversthatthedeadgirl–Miriam–isnoneotherthanthesisterofherpupil,Lukas.Themoreeveryonearoundherassuresherthatsheisnottoblameforthegirl’sdeath,theguiltierKarenfeels.Toher,theaccidentislikeanequationthatjustdoesn’taddup.Inanattempttomakeupforheractionsatleastinpart,shebeginstogiveLukasextramathslessons.But,consumedbyhispain,theboywantsmuchmorefromher.Drivenbyherdesiretoatone,Karenallowsherselftobedrawnintoaself-destructiverelationship.SheshowsLukasnoresistance–evenwhenhebeginstogetroughwithher.ThemoredeterminedlysheplungesintoherintenselyphysicalencounterswithLukas,themoreshedistancesherselffromherboyfriend,Christian.Hejustwantstoputeverythingbehindhimandisfindingitincreasinglyhardtocomprehendhispartner.Theirseethingemotionalproblemsgofrombadtoworse.Lonelyandgrief-stricken,KarenbeginstofeelthattheonlypersonwhocanunderstandherisLukas.Beforelongthepainfulbondbetweenthesetwobeginstoopenupanotherpossibilityaltogether.…