Of the well-known tale of Peter Pan that explores addictions, racism, classism, and the eternal conflict between imagination/creativity and the dull daily grind.
There's enough surface of children's adventure & trials for kids to get into the story, and enough subtext/context for parents to find it engrossing. The terrors that both adult & child characters face are initially age appropriate and not-too-threatening. However, the story darkens, and the characters' varied means of coping with grief & loss are only too understandable in a time when millions of families are struggling with those very emotions.
There's also resonance with generational sibling rivalries and the children's efforts to understand & categorize the various adults through their limited life experiences.
Mingling both adult and child oriented stories in a single pretty, gritty movie is a complex undertaking. The balance is a challenge to attain and maintain. But it works, especially in the mother/daughter relationship, the slow creep of addictions, the terror of watching parents disintegration, & the chase for some brighter fantasy future where pain is no more. A great many children can identify with those terrible family dysfunctions far more than the adults around them might wish to believe.
It's understated performances like this that from Angelina Jolie that remind us she was an accomplished actor long before she became a sex symbol. She easily holds her own against BAFTA-nominated Anna Chancellor, who generates surprising moments of warmth for an actor more often cast as (and here plays) cold, officious, self-righteous.
The gold paint that rubs off the coins is the perfect visual metaphor for this movie. Everyone seeks to first create the ideal world and then, when the gold wears off, to survive through such escapes as are available, however dangerous or self-sabotaging they may be. Ultimately, although children won't catch the subtlety, sisters never stop hoping their brothers will come home.