Katy is almost 12 years old and she has everything. Wonderful parents, a smart, supportive older sister, great friends, and a beautiful extended family that includes grandma, grandpa, aunts and uncles, who are sometimes annoying, and sometimes not, as in all families. When Katy"s sister is diagnosed with a serious illness, the whole household is turned on its head, with doctor"s tests, appointments, fears, doubts and bad moods. Katy has to learn to cope with a sister who was hit by the "evil creature" as she calls the illness. At the same time, Katy, together with her friends, deals with the trials of youth-a disappointing first love, a class queen who is not very nice, and a first kiss.