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 |
| Directing | Fryderyk Najda | Assistant Director |
| Directing | Sylwia Wojdecka | Assistant Director |
| Crew | Grażyna Ostrowska-Szutta | Script |
| Crew | Magdalena Wojtczak | Script |
| Production | Marta Kownacka | Casting |
| Camera | Adam Lenart | Camera Operator |
| Camera | Joanna Kakitek | Camera Operator |
| Camera | Szymon Kuriata | Camera Operator |
| Camera | Tomasz Karnowski | Steadicam Operator |
| Lighting | Hubert Stawicki | Master Lighting Artist |
| Camera | Krzysztof Szulim | Key Grip |
| Camera | Marcin Brzezek | Key Grip |
| Editing | Bartosz Kanadys | Digital Intermediate |
| Art | Max Kobyliński | Interior Designer |
| Art | Łukasz Brudzyński | Props |
| Costume & Make-Up | Tomasz Ciesielski | Assistant Costume Designer |
| Costume & Make-Up | Tomasz Rakowski | Assistant Costume Designer |
| Sound | Marcin Macuk | Musician |
| Sound | Marcin Macuk | Vocals |
| Sound | Marcin Macuk | Music Programmer |
| Sound | Tomasz Nawrot | Musician |
| Sound | Borys Sawaszkiewicz | Musician |
| Sound | Szymon Drabkowski | Musician |
| Sound | Maciej Kałka | Musician |
| Sound | Andrzej Janusz | Musician |
| Sound | Dawid Głogowski | Musician |
| Sound | Patrycja Bukowska | Music Consultant |
| Sound | Monika Krzanowska | Sound |
| Sound | Tomasz Kamiński | Sound |
| Sound | Kacper Habisiak | Sound |
| Sound | Kacper Habisiak | Sound Director |
| Sound | Sebastian Włodarczyk | Dialogue Editor |
| Sound | Franciszek Papis | Sound Effects Editor |
| Sound | Filip Krzyżykowski | Sound Effects Editor |
| Costume & Make-Up | Daria Siejak | Makeup & Hair |
| Costume & Make-Up | Sylwia Kuźnik | Assistant Makeup Artist |
| Costume & Make-Up | Małgorzata Andrzejewska | Assistant Makeup Artist |
| Costume & Make-Up | Marek Bryczyński | Hairdresser |
| Crew | Wojciech Konkol | Health and Safety |
| Crew | Katarzyna Zielińska | Public Relations |
| Crew | Emilia Cygnarowicz | Public Relations |
| Crew | Joanna Jakubik | Public Relations |
| Crew | Aleksandra Karbowiak-Dajewska | Public Relations |
| Crew | Kinga Mielnik | Public Relations |
| Crew | Aleksandra Misiak | Public Relations |
| Crew | Agata Wojciechowska | Public Relations |
| Camera | Estera Świętosławska | Still Photographer |
| Camera | Hubert Komerski | Still Photographer |
| Crew | Hubert Kostrzewa | Stunt Coordinator |
| Crew | Hubert Kostrzewa | Stunts |
| Crew | Dawid Giera | Stunts |
| Crew | Dominika Lis | Stunts |
| Crew | Jakub Bartosiewicz | Stunts |
| Crew | Franciszek Zuzak | Stunts |
| Crew | Sara Banasiak | Stunts |
| Crew | Wiktoria Zawiślak | Stunts |
| Crew | Karol Wróbel | Stunts |
| Crew | Andrzej Tarasewicz | Medical Consultant |
| Crew | Justyna Lewicka | Medical Consultant |
| Crew | Aneta Kielak | Catering |
| Production | Monika Lang | Post Production Coordinator |
| Production | Paweł Gabryś | Line Producer |
| Production | Anna Waśniewska-Gill | Co-Producer |
| Production | Robert Kijak | Co-Producer |
| Directing | Kalina Alabrudzińska | Director |
| Sound | Marcin Macuk | Original Music Composer |
| Writing | Marek Modzelewski | Writer |
| Camera | Nils Croné | Director of Photography |
| Art | Arkadiusz Kosmider | Production Design |
| Art | Arkadiusz Kosmider | Interior Designer |
| Costume & Make-Up | Katarzyna Lewińska | Costume Design |
| Editing | Tymoteusz Wiskirski | Editor |
| Production | Paweł Gabryś | Production Manager |
| Production | Małgorzata Fogel-Gabryś | Executive Producer |
| Production | Michał Kwieciński | Producer |
| 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 |