見習い魔女のメグ・ラズベリーは、17歳の誕生日に師である「永年の魔女」ファウストから、余命1年の呪いを受けていることを告げられる。呪いを免れる方法は、人々の嬉し涙を千粒集めて「命の種」を生み出すこと。メグは涙を集めるために多くの人と関わりながら、出会いと別れを繰り返し、魔女として成長していく
On Meg's seventeenth birthday, she learns she only has one year left to live. Her mentor—the Eternal Witch, Faust—explains that she is cursed and the only way to save herself is to grow a seed of life using one thousand tears of joy. Of course, such tears aren't easy to come by. As Meg begins her quest, she finds herself drawn into the lives of her friends and neighbors in ways she never imagined. By sharing their burdens and using her magic to comfort them, she learns how precious those moments of connection can be, even in the face of death