Onnum Onnum Moonu' set in the backdrop of Alappuzha picturizes the scenic beauty of Alappuzha and Kuttanadu. 'Onnum Onnum Moonu' hilariously narrates the goof ups of Alexander who comes to enjoy the beauty of Alappuzha. An autorickshaw driver and a hotel manager try to cheat Alexander and the resulting events are plotted in 'Onnum Onnum Moonu'. Riyaz, who has done a notable role in 'Flat No 4 B', does the role of Alexander. Amir Niyaz, Abhishek, Surya Sankar, Arun, M R Gopakumar, Irshad, and Sathar also include the cast. 'Onnum Onnum Moonu' is directed by Abhilash SB and the film is written by Fais Umer. Cinematography is by Santhosh K Lal and music by Muralee Krishna and Shibu Joseph with lyrics by Philipose Thathampally and Santhosh Kodanadu.
| Actor | Role |
|---|---|
 Kalabhavan ManiNot listed | Not listed |
 Leona LishoyNot listed | Not listed |
 ArunNot listed | Not listed |
 IndransNot listed | Not listed |
 IrshadNot listed | Not listed |
 SathaarNot listed | Not listed |
 M R GopakumarNot listed | Not listed |
 Boban AlummoodanNot listed | Not listed |
| RRiaz M TNot listed | Not listed |
 Ameer NiyazNot listed | Not listed |
| RRiya SairaNot listed | Not listed |
 Kalasala BabuNot listed | Not listed |
| LLakshmi SanalNot listed | Not listed |