It's a relationship drama set in New Zealand in the mid-1990s. It follows a troubled teenager still reeling from his mother's death from cancer and alienated from his father and grandmother.
Sam Stevenson (George Ferrier) is a teenage boy placed in a boarding school by his father, Robert (Marton Csokas), soon after the death of Sam's mother. Sam feels abandoned and has acted out his frustration in various ways. Robert brings Sam home from school when Robert's mother, Ruth (Charlotte Rampling), comes from England to recuperate from a fall and a slow-healing broken leg. Ruth was a famed wartime photographer but has alienated her son and grandson for years. Nurse Sarah (Edith Poor) accompanies Ruth to New Zealand. Sarah, a devout Catholic, hopes to save Ruth from her heavy drinking (a bottle of gin daily) and alienating personality.
The film follows Sam's relationship with his grandmother, especially when Robert leaves for England to look after some of his wealthy mother's estate issues. We learn more about Sam's trauma around his mother's death and the reasons for Ruth's alienation from her only son. We also understand the real reason Ruth came to New Zealand.
"Juniper," which gets its name from a key ingredient in gin, is a film about life and death and the healing of family relationships. It is not maudlin and features excellent performances by Ferrier and Rampling. A few scenes stretch credulity, including the logistics of managing Ruth's last decision. A white horse plays a crucial role in the story. In sum, "Juniper" is an outstanding film.