Animal rescue worker Iris Mallery thinks she has created a stable and secure home for herself, but when her small town is battered by an earthquake, Iris needs to rebuild not only her own life, but the lives of the displaced dogs and cats now filling her shelter.

The quake's effects are personal for Iris, but not for seismologist Casey Radnor. Casey is a scientist above all else, logical and disconnected from the natural disasters she studies. When she rescues a stray dog from some rubble, she finds herself caught up in the lives of Iris and the others affected by the quake, despite her best efforts to remain professional.

The beautiful San Juan Islands in Washington State become the epicenter of both the earthquake and the collision of Iris's and Casey's hearts. Can love bind the shattered fragments together again?