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 peakat what her letter says.
Sofia's Abuela is taking her and Sophia's cousin Hector to the movies, but when Hector develops hiccups, their movie plans are put on hold until the children get their hiccup problem under control.