Sam is a married mother of a young adult daughter. Her husband lost his job and his father right around the same time, and he has been in a deep depression ever since. She's the sole breadwinner and exhausted and she has a terrible supervisor who makes her feel like she can't do anything right.
Nisha is super wealthy. An American living in England with her probably billionaire husband, their son is in an American boarding school.
While at the gym, the two accidentally end up with each other's gym bag.