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