Emily and Sebastian travel to his hometown of Paris to land the Ad account of famed Durand Diamonds and end up in a tricky situation when the client mistakes them for a happy couple.

Lizzie, a high-end event planner, lies awake nightly while her devoted fiancé Josh rests peacefully. When a sleep-deprived incident causes her to run into Billy, a low-key bartender who is just as sleepless and frustrated as she is, they discover that they can only fall asleep while next to each other.