Told in text messages, middle-schooler Ava is having a really bad day: her parents are getting divorced, she has had a big argument with her best friends, and the charge on her cellphone is getting low; but things are about to get a lot worse because the lockdown alarm has just gone off, and there is an intruder in the school building.

Told in verse in two voices, with a chorus of fellow students, this is a story of two girls, opposites in many ways, who are drawn to each other; Kate appears to be a stereotypical cheerleader with a sleek ponytail and a perfectly polished persona, Tam is tall, athletic and frequently mistaken for a boy, but their deepening friendship inevitably changes and reveals them in ways they did not anticipate.

School and life have become much more difficult since Ben Y's older brother died, especially since the indefinable Ace seems determined to seek her out without clarifying what kind of relationship she wants; mostly Ben Y tries to cope with her situation by going to the chatroom and obsessively typing messages to her brother who is no longer there--but when she starts getting messages from the ghost in the machine (apparently) she finds that her deepest...

Told in assonant free verse, Levi was once a premature baby who suffered from respiratory problems; he recovered, and now in seventh grade, he struggles to demonstrate to his divorced mother and overprotective brother that he is okay--so when his father suggests he take up boxing he falls in love with the sport, but he still must find a way to convince his family to set him free to follow his dream.

Mike is suspicious when his family joins an expedition to Mars at the last minute, and his fears are confirmed when all of the adults on the colonizing mission including his parents, begin to act strangely.