A message in a bottle. One summer. A family to reunite.

Lou suffers from a rare type of dementia and dies in her fifties. She leaves behind a message in a bottle, charging her husband Joe with a challenging task: he has two months to reunite their patchwork family whose members have fallen out with each other.

Luckily for him, Lou has thought of everything and helps him along with a list of family activities and recipes. Slowly but surely, they all find their way back to each other:

Joe's son Cyrian and his two daughters Apple and Charlotte.
Cyrian's second wife who can't stand Apple because she isn't her own.
Joe's stunning daughter Sarah who has lost the love of her life and seeks solace in one-night stands.

But Joe is running out of time. Will his efforts pay off before it is too late? And most importantly: what's in the mysterious letter?