with 13 episodes premiered on March 23, 2018

Alexa is battling cancer. But with her best friend, Katie, by her side, she's also starting high school -- and ready for whatever comes next.

with 10 episodes premiered on December 26, 2018

For best friends Alexa and Katie, sophomore year brings budding romance, a birthday milestone -- and big lessons they'll never forget.

with 8 episodes premiered on December 30, 2019

Junior year is finally here for Alexa and Katie with new relationships, surprising friendships and big decisions on the horizon.

with 8 episodes premiered on June 13, 2020

Summer's over, and Alexa and Katie are starting their senior year. They've been through so much together — but there's still more to come.