and the bucket list adventure between singer louie tomlinson and a new friend. ♪ one life for the twof us >>> but first the "nightline" five. (dad) this i(mom)eam cake needs a freezefreezer's full. (vo) only frigidaire's custom flex temp drawer can switch from fridge to freezer. (son) nice save! (vo) that's using your frigidaire. our three contestants are all at the big ikea table. contestant #1, impressive knife skills. but contestant #2 fights back by using fresh parsley. make room for the judge! live together. lounge differently. ikea. journey and one that some women are now choosing to take on alone. changing the conversation of what it means to start a family. here's my "nightline" co-anchor, juju chang. >> reporter: this is the moment deirdre hopes will turn her dreams into a reality. >> i have waited my whole life, and i'm starting to get really nervous. we can see the air bubbles. >> reporter: she's undergoing ivf. in-vitro fertilization to become a mom. but this isn't exactly how deirdre thought her journey to motherhood would begin. >> wonderful. oh, my gosh. >> good luck. >