Emma accompanies her terminally ill sister Maggie on her last days to end her life by the means of assisted suicide. She soon finds herself challenged when she must overcome her own tumultuous feelings to reconcile and embrace Maggie's final wishes. With their time coming to an end, they embark on a road trip to try to accommodate Maggie's need to see the Matterhorn in person one final time. It's both a trip of discovery and a battle of wills.