Ksyusha's relatives have been fighting for her life since she was born. Her grandmother, for example, gave her granddaughter a kidney when her own organs failed and other relatives were unsuitable as donors. Her parents were flying their daughter from Sverdlovsk region to Moscow every month for a couple of years for an injection of medicine, when rejection began, luckily the process was stopped. The mother left her job and her dreams of a career to take care of the child's health. Unfortunately, the girl's father left the family a year ago and does not pay alimony, even though he knows how much a daily dose of medication Ksyusha has to take.
Of the 16 medications needed, the girl receives two from the budget. The rest are replaced by Russian analogues, for which Ksyusha's test scores immediately begin to fall. The most important drugs are Prograf and Selsept - they prevent the rejection of a donor organ. Thanks to them, Ksyusha can live the life of an ordinary child. This year she will go to the second grade.
Her mother tries to buy the necessary medicine for Ksyusha herself, because it gives her a normal childhood and a normal life, but sometimes she does not succeed in everything - like now. And then she and Ksyusha need help!