After an inexplicable force decimated her reservation, Native American teen Dani (Blu Hunt) awoke in a foreboding facility. She's apprised with the four other young "in-patients"-Rahne (Maisie Williams), Ilyana (Anya Taylor-Joy), Sam (Charlie Heaton), and Roberto (Henry Zaga)-that they're mutants who need to learn to harness their strange abilities... and also, that they're not free to leave. Josh Boone's dark, long-shelved take on Marvel's next-gen X-Men co-stars Alice Braga, Adam Beach. 94 min. Widescreen; Soundtrack: English. Two-disc set.