On the eve of Nikhil and Karishma’s engagement, Karishma’s wealthy father, Devesh Solanki, expresses his disapproval, believing Nikhil to be a lackadaisical young man. With one week to prove himself worthy to marry Karishma, Nikhil and Karishma's sister, Meeta, grow closer to each other.
You can now watch Hasee Toh Phasee online on the following streaming providers in the United States.
| Directing | Vinil Mathew | Director |
| Writing | Harshavardhan Kulkarni | Screenplay |
| Production | Anurag Kashyap | Producer |
| Production | Karan Johar | Producer |
| Production | Vikas Bahl | Producer |
| Production | Vikramaditya Motwane | Producer |
| Production | Apoorva Mehta | Co-Producer |
| Production | Dipa De Motwane | Executive Producer |
| Production | Ranjan Singh | Associate Producer |
| Production | Vivek B Agrawal | Associate Producer |
| Production | Satish Mane | Unit Production Manager |
| Writing | Harshavardhan Kulkarni | Story |
| Writing | Anurag Kashyap | Dialogue |
| Writing | Harshavardhan Kulkarni | Dialogue |
| Writing | Vinil Mathew | Dialogue |
| Writing | Purva Naresh | Dialogue |
| Camera | Sanu John Varghese | Director of Photography |
| Camera | Ridhiin Pancchmatia | Still Photographer |
| Sound | Shekhar Ravjiani | Original Music Composer |
| Sound | Vishal Dadlani | Original Music Composer |
| Sound | Amar Mangrulkar | Additional Soundtrack |
| Sound | Boloy Kumar Doloi | Sound Re-Recording Mixer |
| Art | Aditya Kanwar | Production Design |
| Art | Tiya Tejpal | Set Dresser |
| Production | Mukesh Chhabra | Casting |
| Production | Vaibhav Vishant | Casting Associate |
| Crew | Ahmed Khan | Choreographer |
| Crew | Bosco Martis | Choreographer |
| Crew | Caesar Gonsalves | Choreographer |
| Crew | Remo D'Souza | Choreographer |
| Costume & Make-Up | Divvya Gambhir | Costume Design |
| Costume & Make-Up | Nidhi Gambhir | Costume Design |
| Editing | Shweta Venkat Mathew | Editor |
| Editing | Manik Dawar | Assistant Editor |
| Sound | Subash Sahoo | Sound Designer |
| Sound | Shafqat Amanat Ali | Playback Singer |
| Directing | Vivek Soni | Assistant Director |
| Writing | Amitabh Bhattacharya | Lyricist |
| Writing | Kumaar | Lyricist |
| Sound | Sunidhi Chauhan | Playback Singer |
| Sound | Benny Dayal | Playback Singer |
| Sound | Chinmayi Sripaada | Playback Singer |
| Sound | Shekhar Ravjiani | Playback Singer |
| Sound | Shreya Ghoshal | Playback Singer |
| Sound | Vishal Dadlani | Playback Singer |
| Sound | Sanam Puri | Playback Singer |
| Sound | Shipra Goyal | Playback Singer |
