Weronika and Łukasz – a would-be bride and groom from the first film – decide to give themselves a second chance and invite their family to the wedding and the reception, which will take place in a seaside town. Among the invited guests, the viewers will recognise well-known characters, including: Wanda and Tadeusz with their dog, Mirelka, and also a divorcee, Małgorzata, accompanied by… her much younger partner, Jan , and her mother. The sea, drinks and nude sunbathers make the family members of the bride and groom more open and ready to shed their masks.
Unfortunately the movie The In-Laws 2 is not yet available on HBO Max.
| Directing | Grzegorz Górecki | Assistant Director |
| Crew | Magdalena Wojtczak | Script |
| Directing | Sylwia Wojdecka | Assistant Director |
| Camera | Szymon Kuriata | Camera Operator |
| Sound | Kacper Habisiak | Sound |
| Directing | Fryderyk Najda | Assistant Director |
| Crew | Grażyna Ostrowska-Szutta | Script |
| Camera | Krzysztof Szulim | Key Grip |
| Camera | Tomasz Karnowski | Steadicam Operator |
| Costume & Make-Up | Tomasz Ciesielski | Assistant Costume Designer |
| Sound | Tomasz Kamiński | Sound |
| Costume & Make-Up | Tomasz Rakowski | Assistant Costume Designer |
| Sound | Borys Sawaszkiewicz | Musician |
| Sound | Filip Krzyżykowski | Sound Effects Editor |
| Production | Marta Kownacka | Casting |
| Art | Łukasz Brudzyński | Props |
| Art | Max Kobyliński | Interior Designer |
| Lighting | Hubert Stawicki | Master Lighting Artist |
| Camera | Marcin Brzezek | Key Grip |
| Sound | Andrzej Janusz | Musician |
| Sound | Monika Krzanowska | Sound |
| Editing | Bartosz Kanadys | Digital Intermediate |
| Sound | Marcin Macuk | Musician |
| Sound | Tomasz Nawrot | Musician |
| Sound | Szymon Drabkowski | Musician |
| Sound | Maciej Kałka | Musician |
| Sound | Dawid Głogowski | Musician |
| Camera | Joanna Kakitek | Camera Operator |
| Sound | Marcin Macuk | Vocals |
| Crew | Hubert Kostrzewa | Stunt Coordinator |
| Crew | Katarzyna Zielińska | Public Relations |
| Crew | Emilia Cygnarowicz | Public Relations |
| Camera | Estera Świętosławska | Still Photographer |
| Crew | Sara Banasiak | Stunts |
| Crew | Joanna Jakubik | Public Relations |
| Crew | Dawid Giera | Stunts |
| Sound | Franciszek Papis | Sound Effects Editor |
| Costume & Make-Up | Marek Bryczyński | Hairdresser |
| Costume & Make-Up | Daria Siejak | Makeup & Hair |
| Crew | Agata Wojciechowska | Public Relations |
| Crew | Jakub Bartosiewicz | Stunts |
| Crew | Franciszek Zuzak | Stunts |
| Crew | Wiktoria Zawiślak | Stunts |
| Sound | Patrycja Bukowska | Music Consultant |
| Crew | Dominika Lis | Stunts |
| Crew | Aleksandra Karbowiak-Dajewska | Public Relations |
| Sound | Sebastian Włodarczyk | Dialogue Editor |
| Costume & Make-Up | Sylwia Kuźnik | Assistant Makeup Artist |
| Costume & Make-Up | Małgorzata Andrzejewska | Assistant Makeup Artist |
| Crew | Wojciech Konkol | Health and Safety |
| Crew | Andrzej Tarasewicz | Medical Consultant |
| Camera | Hubert Komerski | Still Photographer |
| Crew | Karol Wróbel | Stunts |
| Crew | Hubert Kostrzewa | Stunts |
| Camera | Adam Lenart | Camera Operator |
| Sound | Marcin Macuk | Music Programmer |
| Sound | Kacper Habisiak | Sound Director |
| Crew | Kinga Mielnik | Public Relations |
| Crew | Aleksandra Misiak | Public Relations |
| Production | Robert Kijak | Co-Producer |
| Crew | Justyna Lewicka | Medical Consultant |
| Production | Anna Waśniewska-Gill | Co-Producer |
| Production | Monika Lang | Post Production Coordinator |
| Crew | Aneta Kielak | Catering |
| Production | Paweł Gabryś | Line Producer |
| Directing | Kalina Alabrudzińska | Director |
| Sound | Marcin Macuk | Original Music Composer |
| Camera | Nils Croné | Director of Photography |
| Production | Paweł Gabryś | Production Manager |
| Editing | Tymoteusz Wiskirski | Editor |
| Writing | Marek Modzelewski | Writer |
| Art | Arkadiusz Kosmider | Production Design |
| Production | Michał Kwieciński | Producer |
| Costume & Make-Up | Katarzyna Lewińska | Costume Design |
| Production | Małgorzata Fogel-Gabryś | Executive Producer |
| Art | Arkadiusz Kosmider | Interior Designer |
| Production | Małgorzata Witkowska | Administration |
| Visual Effects | Radosław Rekita | Visual Effects |
| Art | Janusz Bieniek | Title Designer |
| Sound | Jacek Wiśniewski | Foley Supervisor |
| Sound | Joanna Pindel | Foley Editor |
| Sound | Aleksandra Jakubowicz | Foley Artist |
| Sound | Bartosz Łubkowski | Foley Editor |