Scripted by Ken Loach’s regular collaborator Paul Laverty, this tree-hugging (literally) Spanish drama sends a young woman on a quixotic mission to steal back an ancient, gnarled olive that her family sold. It’s a tree with significance – as a child she used to play in its roots, and it represents a link between her now senile grandfather and the man he once was. Painfully well meaning at times, this road movie would work better if some of the worthiness was pruned and if the tree-thieving was not quite so patently ludicrous.