When an asteroid has an 84.7% chance of colliding with the Earth in four days, eleven-year-old Kemi, who loves scientific facts and probability, assembles a time capsule to capture her family's truth as she tries to come to terms with saying goodbye.
Twelve-year-old Randi, unhappy about moving from Brooklyn to Deer Creek, Tennessee, after her mother's death, soon finds new friends and a case to solve surrounding a stolen time capsule and rumors of a centuries-old treasure.