The year is 2173, and with celebrations of the 400th anniversary of the American Revolution getting underway, business is booming at time travel consulting firm Constantine and Associates. Still, the last thing Olivia Lake expects on her first day of work is to be thrust into preparation for a time jump, in partnership with the dashing and apology-prone George Merrill. Their destination: London, 1773, to retrieve a pound of Bohea leaf destined for the Boston Tea Party. Before long, Olivia is immersed in danger, string quartets and love triangles amongst tea smugglers in the South of England, trying to stay afloat and do her job despite George's unpredictability and the secrets shadowing their quest. Are those secrets linked to Olivia's clandestine search for a missing Constantine and Associates employee: her husband, Bernard Quan?