Accused of witchcraft and mistreating her stepdaughter Lyra, the White Witch Morwenna defends herself, claiming she cared for Lyra as her own after the girl's father was killed. Her denials are met with a unified town petition against her. Separately, her healer reveals her magic is fatally corrupted, giving her only two months to live. Determined to secure Lyra's future, Morwenna decides against life-extending rituals to preserve her remaining resources for her stepdaughter, and finally tells Lyra she will take her to see her long-lost mother.
On the day of a family wedding celebration, a woman arrives with her stepdaughter, Lyra. The stepmother explains that due to her own pressing obligations, she can no longer care for Lyra and asks the girl's biological mother, Seraphine, to take her in. Lyra reacts with hurt, accusing her stepmother of never truly seeing her as family and turning to her birth mother instead. Seraphine hesitates, citing the upcoming marriage of Lyra's brother and the lack of space. As the two mothers argue over their broken agreement, Lyra's future hangs in the balance.
Lyra arrives at a family party only to be rejected by Morwenna, the woman who agreed to raise her after her father's death. Morwenna claims she is too busy with a wedding and cannot continue caring for Lyra. The conflict escalates when another man, Roderick, reveals Morwenna only took Lyra to exploit her father's magical crest and now wants to discard her. He offers money and demands they never return. Despite Morwenna's weak protests, Roderick publicly declares Lyra, who has broken mana channels, is unwanted 'dead weight' and bans her from the house, forcing Lyra to leave in disgrace.
After a quarrel, Lyra refuses to eat, accusing her mother Morwenna of not wanting her anymore. Morwenna, recently fired by the estate steward Dunn for missing work to care for her sick daughter, receives a package from Elman, a master who outlines two potential cures for Lyra's legs. One is a fast but deadly risky method; the other is agonizingly slow but safer. Morwenna vows to try, even if it forces Lyra into unbearable pain, knowing her own time is limited and accepting her daughter's potential hatred.
Lyra’s stepmother insists on continuing a harsh water therapy session in the Moon Spring, ignoring the girl's desperate pleas that she can't endure it. As Lyra struggles and cries for help, bystanders intervene, accusing the woman of abusing a disabled child. The stepmother insists it's therapy, but the crowd threatens to report her to the church. The situation escalates when someone reveals Lyra is not her biological daughter, branding the stepmother as heartless. As tensions peak, a commanding voice orders them to stop.
Morwenna, a woman caring for a young girl named Lyra who cannot walk, confronts onlookers who criticize her harsh methods. She challenges them to take responsibility for Lyra's lifelong care if she cannot. Desperate, Morwenna pushes Lyra through another painful rehabilitation session, achieving a small breakthrough. However, Morwenna collapses and is diagnosed with mana depletion, leaving her only one month to live. Facing her own mortality and Lyra's fragile progress, Morwenna resolves to attempt a deadly, high-risk magical procedure to heal Lyra before time runs out.
Lyra's stepmother, Morwenna, has restrained her to perform a painful magical procedure, insisting it's the only way to save Lyra's dying mana channels. Lyra fiercely resists, begging to be let go and declaring she'd rather be useless than endure the torture, even accusing Morwenna of wanting her dead. Despite Lyra's desperate pleas and insults, Morwenna persists with the treatment, telling her to bear the pain. Overwhelmed by the agony and feeling abandoned, Lyra defiantly threatens to end her own life if Morwenna doesn't stop.
A woman confronts a girl named Lyra on the edge of a river, angrily reminding her that her father sacrificed his life to save her. The girl, in despair, screams that she wants to die. The woman, calling her a psycho, then declares she will die with her and forcefully drags Lyra toward the water, demanding they jump. Onlookers recognize the woman as the White Witch seen abusing her disabled daughter. Terrified, Lyra struggles to break free as the woman insists on taking them both down together.
In a desperate confrontation, a woman named Morwenna pushes a younger woman, Lyra, to her limits, urging her to stand up and survive on her own. Lyra, overwhelmed and resentful, accuses Morwenna of cruel torture and reports her to the church. Guards arrive, charging Morwenna with abusing a disabled person based on Lyra's testimony and documented injuries. Lyra now stands, but claims her recovery was a nightmare inflicted by Morwenna, who used up a magical seal left by Lyra's father. As Morwenna tries to present a recovery log as proof, Lyra rejects it, insisting Morwenna's true intent was to kill her, leaving the truth of their relationship and the healer's motives dangerously unclear.
With just two months left to live, the feared White Witch Morwenna cruelly drives her paralyzed, resentful adopted daughter Lyra to walk again. Lyra despises the woman she blames for her ruined life, unaware of Morwenna's secret sacrifice. The truth lies hidden: Morwenna sold her ancestral legacy and hid her fatal illness, all for Lyra's future. When Lyra finally unravels the heartbreaking reality and utters 'Mom,' her belated love meets only profound and irreversible loss.