The whole Martinez family is shopping for back-to-school supplies, and Sofia is excited by the colorful backpacks and fancy notebooks--but excitement turns to alarm when four-year-old Manuel disappears.
Sofia is making a family time capsule, filled with pictures and mementos from their lives, to be opened in fifteen years, and Abuela contributes letters to each of her grandchildren--but Sofia is so consumed with curiosity that she decides to sneak a peak at what her letter says.
"When a freak spring blizzard buries Starwood Park, Freddie works with Mr. Vaslov to clear the sidewalks using a new invention--Zapato Power snowshoes. But not even the snow can stop a thief from causing trouble in the neighborhood. Can Freddie solve the case, even if it means helping Erika, the Starwood Park bully?"--
The elderly Sarah laughs in delight when she overhears three strangers tell her husband Abraham that he will soon become a father, so when a son is born to her a year later, she names him Isaac, which means "laughter."