<Table> <Tr> <Td> </Td> <Td> This episode's plot summary may be too long or excessively detailed . Please help improve it by removing unnecessary details and making it more concise . (June 2016) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This episode's plot summary may be too long or excessively detailed . Please help improve it by removing unnecessary details and making it more concise . (June 2016) (Learn how and when to remove this template message) </Td> </Tr> <Tr> <Th> 40 </Th> <Td> 14 </Td> <Td> "A New Man" </Td> <Td> Grant Brown </Td> <Td> Sam Carroll </Td> <Td> 17 May 2015 (2015 - 05 - 17) </Td> <Td> 29 May 2015 </Td> </Tr> <Tr> <Td_colspan="7"> Zac struggles to come to terms with the revelation that he is a real merman who was given up for adoption by Mimmi's mother . He isolates himself from everyone else and refuses to accept Mimmi as his sister . When a couple of jerks show up and ridicule Zac by calling him a quitter, Zac becomes very angry and begins recklessly using his powers against them . Mimmi and Evie manage to calm him down before he goes too far by reminding him that, unlike Mimmi, he has two parents who love him . Afterwards, Zac talks to his parents who tell him about how they found him and adopted him as a baby . The next day, Zac finally accepts Mimmi as his sister . </Td> </Tr>

When does zac find out he's adopted