When Kenzie picks out a small tree for her family's backyard, she promises to take care of it.

It seems delicate, just like her mom, who doesn't always feel well. As the seasons change, her mom's health has ups and downs, and the tree sways in the wind and weather. Sometimes her mom is too tired to play, and they just cuddle. Other times, she has to go to the hospital. During the winter, she's away for many days. When a snowstorm hits, Kenzie frantically tries to keep the tree warm. And she worries: Has she broken her promise? But no matter the challenges, come springtime, the tree is still there, blossoming and strong―just like her mom, and just like Kenzie.