Two couples with the same surnames pursue in-vitro fertilisation and wait for their upcoming babies. Trouble ensues when they find that the sperms of each couple have been mixed with each other. Two couples with the same surnames pursue in-vitro fertilisation and wait for their upcoming babies. Trouble ensues when they find that the sperms of each couple have been mixed with each other. Two couples with the same surnames pursue in-vitro fertilisation and wait for their upcoming babies. Trouble ensues when they find that the sperms of each couple have been mixed with each other. Two couples with the same surnames pursue in-vitro fertilisation and wait for their upcoming babies. Trouble ensues when they find that the sperms of each couple have been mixed with each other.