The Number Family

Introduction

Two and Three move into their new home.
One they're setlled, Two propses to Ivory Hypothesis, she accepts and they marry on the spot.
It isn't long before their daughter Rage is born.
Three becomes an adult, and developes a strong friendship with her workmate, Benjamin.

Took Three long enough to get her first kiss!

Rage becomes a toddler.
Three moves out.
Not long thereafter, Ivory has a baby boy, Binar.
Rage becomes a child.

Update #1

Two was getting rather eccentric since his rise to "Inventor" on the science career track. He purposely gave himself food poisoning in order to try out a new cure for people who had been food poisening. However, his theory of lack of food, sleep and plenty of cleaning (amidst taking care of newborn Binar) only resulted in a visit from the Grim Reaper.

Death of Two

Two's death resulted in Ivory dissolving into aspiration failure as soon as she came home from work (with a promotion), and she required a visit by the Sim Shrink.
Brent Experiment, ever on the prowl, took it upon himself to cheer Ivory up... which resulted in her getting pregnant.
Binar becomes a toddler.

Update #2

Ivory gave birth to Beauty.
In her search for a second husband (she just couldn't stand not being married), Ivory fell in love with Sly Trial. One thing lead to another and... well, let's consider her history with Brent for a second.
Binar becomes a child.

All Ivory was doing was helping Binar with his homework!

The night after Binar's first day of school, Ivory decided to help him with his homework, when Two's ghost took it upon himself to scare her.
Beauty and Rage had their birthdays on the same day. Beauty became a toddler, and Rage became a teen.
Rage had found some of Three's old clothes to wear, and as if inspired by her half-sister, Rage aslo became a Fortune sim.

Rage and Beauty

The morning came, and Ivory was woken by what was now a familar sensation: labour. Sly's daughter was born, and named "Petal".
Rage and Binar get into private school.

Update #3