After tragedy strikes Henry and Penny, he befriends a tenacious young girl and discovers she is constructing a raft to sail across the Atlantic to find her lost father. Together, along with some unlikely friends, they set forth to construct the vessel and subsequently rebuild their lives.
| Actor | Role |
|---|---|
 Jason SudeikisHenry Herschel | Henry Herschel |
 Maisie WilliamsMillie | Millie |
 Jessica BielPenny Herschel | Penny Herschel |
 Mary SteenburgenJulia Mureaux | Julia Mureaux |
 Orlando JonesDumbass | Dumbass |
 Richard RobichauxPascal | Pascal |
 Paul ReiserWendell | Wendell |
 Bryan BattDr. Melvin | Dr. Melvin |
 Jayson Warner SmithUncle | Uncle |
 Christopher GehrmanWilliam Willis | William Willis |
 Wendy MiklovicWilliam Willis' Wife | William Willis' Wife |
 George WilsonDumbass' Dad | Dumbass' Dad |
 Joshua MikelThor Heyerdahl | Thor Heyerdahl |
 Russ RussoDavid | David |
 Cailey FlemingNine-Year-Old Millie | Nine-Year-Old Millie |
 Darnekia DowlCaterer | Caterer |
 Natalie MejerDoctor | Doctor |
 Sheldon FrettHaitian Sailor | Haitian Sailor |
 Madeleine WoolnerSecretary | Secretary |
 Ian BelgardPascal's Son (uncredited) | Pascal's Son (uncredited) |