Laure​ ​ ​ must​ ​ replace​ ​ a ​ ​ deceased​ ​ swimmer​ ​ in​ ​ the​ ​ relay​ ​ swim​ ​ team.​ ​
The​ ​ qualifiers​ ​ are​ ​ near and​ ​ the​ ​ team​ ​ worries​ ​ about​ ​ their​ ​ chances​ ​ at​ ​ winning ;​ ​ the​ ​ grief​ ​ and​ ​ stress​ ​ pushes​ ​ Laura​ ​ to obsess​ ​ over​ ​ the​ ​ one​ ​ she​ ​ replaces,​ ​ Camille.