Rocky stands alone at the waterline watching Nick, Jamie, and Maya boogie board, scanning anxiously for shark fins. She recalls a memory from when Jamie was four and Willa was an infant: she had Nick drop her at this same beach so she could swim alone until her legs went numb, a moment of overwhelm in early motherhood when Nick was 'terrified of her.'

Willa joins her mother on the sand, notices she's been crying, and gently checks in. Rocky deflects with humor, and Willa invites her up to eat lunch under the umbrella. Rocky reflects on how lunch on the beach used to be miserable with sandy little kids, but now feels luxurious.

Eating her sandwich and drinking a beer, Rocky tells Willa she no longer cares about her cellulite. Willa riffs on an evolutionary theory that older women retain cellulite as energy reserves in case the patriarchy stops feeding them. Their banter is warm and irreverent. Rocky shares a bizarre Padma Lakshmi dream, and Willa affirms her mother's bisexuality.

The swimmers return hungry. Jamie digs through the chaotic beach bag looking for the Kadima ball, unearthing rocks, trash, scented pencils (Smencils), and finally a partially wrapped maxi pad. Maya, an archaeologist, calls it a dig site of childhood strata. Rocky takes the pad back, calling it 'an artifact of my fertility,' silently thinking the same of her children and scars. Nick catches her eye; they smile. Jamie finds the ball and he and Willa head off to play, 'like the children they will always be.'