After the events of Ip Man 3, Ip Man (Donnie Yen) has retired from teaching Wing Chun and now lives a peaceful life with his wife, Cheung Wing-yan (Simone Ashley). However, a new challenge emerges when he meets a young and talented martial artist named Lei (played by a new actor, e.g., Henry Golding), who is seeking to learn Wing Chun from Ip Man.