Smiles to Go

"I looked at the clock.10:15. Saturday. September 26. And for me, the start of a new calendar: PD1 (The Day I Heard of the Proton's Death)." When Will, a high school freshman, learns about proton decay, he realizes that nothing lasts forever. Will doesn't want things like his Saturday night pizza-and-Monopoly tradition with his best friends to change, but he would love it if his little sister, Tabby, weren't such a brat anymore. Then Tabby is badly injured, and Will sees that, like the world around him, he may need to change, too.