MarsetAvriltakesplaceinaMontrealofthefuturewhenhumanityisreadytomovetoMars.Butnoteveryoneisreadytogo.JacobObusacharismaticandbelovedseptuagenarianleaderoftheanti-cyberneticmovementtakesprideinslowingdowntime.Heplayscaptivatingmusiconinstrumentsinspiredbywomen’sbodiesanddesignedbyhisfriendArthur.It’swhenJacobandArthuraresmittenbyAvrilayoungandshort-windedphotographerthatthetruenatureoftheoldsexsymbolisrevealed.AftermakingloveforthefirsttimeinhislifeJacobisreadytoleaveforMarsinsearchofhismuse.InthemidstofeverythingarrivesEugèneSpaakinventorcosmologistandArthur’sfatherwhomaintainsthatMarsisonlyachimera.