Daniel Funk, who lives with three sisters, his mother, grandmother, and great-grandmother, has always wanted a brother, and when he suddenly shrinks to the size of a toe, he discovers that he has a twin brother who is the same size.

Still in shock after discovering that he has the ability, although uncontrollable, to miniaturize himself, and that he has a twin brother who is the size of a toe, sixth-grader Daniel Funk tries to focus on completing a diorama about ancient Egypt for his history class.

Once inseparable best friends, thirteen-year-old identical twins Sammie and Charlie begin to grow apart when they make new friends and join different clubs as seventh graders at a brand new school.