From acclaimed director Mamoru Hosoda (Wolf Children) comes a daringly original story of love passed down through generations. When four-year-old Kun meets his new baby sister, his world is turned upside down. Named Mirai (meaning "future"), the baby quickly wins the hearts of Kun's entire family. Kun becomes increasingly jealous of her, until one day he storms off into the garden, where he encounters strange guests from the past and future – including his sister Mirai, as a teenager. Together, Kun and Mirai go on a journey through time and space, uncovering their family’s incredible story, in this magical and emotionally soaring adventure about the ties that bring families together and make us who we are.
. The movie follows a 4-year old boy who is struggling to cope with the arrival of a little sister in the family until things turn magical. A mysterious garden in the backyard of the boy's home becomes a gateway allowing the child to travel back in time and encounter his mother as a little girl and his great-grandfather as a young man. These fantasy-filled adventures allow the child to change his perspective and help him become the big brother he was meant to be.. Mirai Wiki