After realizing their babies were switched at birth, two women develop a plan to adjust to their new lives: creating a single — and peculiar — family.

A month before marrying Javier, Cristina celebrates her bachelorette party, at which she meets her high-school ex Felipe and they end up spending the night together. When Cristina finds out that she is pregnant, emotion and chaos are unleashed, especially later when she finds out she's expecting twins--and one could be Javier's and one could be Felipe's.