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78-year-old veteran Mask meets Luua, a half-human-sized alien T-Rex, at a nursing home and falls for her. His family objects at first, but Luua's kindness melts their hearts. When criminals abduct Mask's grandson to threaten Luua, the whole family bands together to save the boy. Once Luua unlocks her alien powers, her home planet calls her back. Mask decides to leave Earth and journey to the Vega system with her.