Rhiannon (Ella Purnell) never complains, smiling through it all with reserves of serenity and a sparkling wit. She has become skilled at keeping it together. Being normal. But behind this mask is a ferocious power lying dormant, and a long-buried secret that Rhiannon wishes she could forget. When a chance encounter with a stranger leads to a shocking act of violence, Rhiannon’s mask slips completely and she is forced to confront the darker side she has long kept hidden.

https://www.themoviedb.org/tv/218347-sweetpea