Elsa navigates a dizzying swirl of emotions after her night with Jules. Matthieu makes a confession. Antoine springs a surprise on Milou.

Simmering tensions, unexpected guests and romantic rivalries lead to mayhem at Elsa's 30th birthday party.

Anaïs drops in for a visit as Elsa wrestles with growing doubts about Jules. A moment of reckoning pushes longtime friendships to the breaking point.