Mone Kamishiraishi playing Mirai and Thai actor Thiti Mahayotaruk playing Samut star in "Gata no Kuni kara: Message from the Mudflats". Samut, a Thai celebrity, disappears from the production while filming a TV show in Saga Prefecture. He longs to see the mudflats (Gata) so he can re-experience the joy he felt as a young boy. He meets Mirai, a local high school girl while on the run and convinces her to take him to the mudflats. Even though, the show's director and his staff are in hot pursuit, Mirai and Samut manage to make it to the mudflats, but... How will it all end? Though the two of them do not speak the same language, they are able to communicate via Mucchi, Mirai's pet mudskipper, due to an extraordinary power he possesses. What could this extraordinary power be?