In the ending of Sand Castle, we see that the family’s struggle is intertwined with a powerful metaphor for trauma, loss, and the ongoing effects of war. The film is told through the perspective of young Jana, who is haunted by her memories of a tragic event—the death of her sister Yara during a bombing. This trauma is symbolized by the red shoe, which Jana keeps as a memento, representing innocence lost and the violence that shattered her family. Throughout the story, the island where Jana and her family are stranded acts as a symbol for their mental and emotional state—isolated, overwhelmed, and drowning in grief.
As the story unfolds, we witness the family attempting to survive on a lifeboat, which also serves as a metaphor for their fragile hope and their attempt to escape their past. We see Nabil, the father, trying to steer the boat and protect his family, but he is deeply affected by guilt and loss. His pain is more emotional than physical, as he laments that "no one can escape the past." His wife, Yasmine, sacrifices herself, succumbing to starvation after their tragic circumstances. Their children, Adam and Jana, are left to cope with the aftermath.
The climax reveals Adam bravely swimming toward the horizon, believing he has found help, symbolizing his hope to rescue his sister and start anew. Meanwhile, Jana, alone on the boat or lighthouse, continues to cling to her imagination as a way to endure—her mind creating a safer world amid the chaos. Her visions become increasingly despairing, with the island seemingly sinking beneath the rising waters, signifying her fading hope and the overwhelming nature of her trauma.
Finally, the arrival of rescue workers wearing hazmat suits hints that some time had passed—possibly weeks—before Jana and Adam are saved, or it might represent her final fantasy where they perish together. The ending leaves room for interpretation: it is possible that Jana and Adam, along with other refugees, succumbed to their ordeal and weren’t saved at all, making their story one of eternal loss. Yet, if they are rescued, the film underlines that their journey was one marked by heartbreak, resilience, and the indelible imprint of war’s trauma. Ultimately, the ending emphasizes that the boundaries between reality and imagination blur when trauma takes hold, leaving viewers contemplating the enduring scars carried by those who experience such suffering.