It's 1942. Meg Burke casts off the security of being a math teacher in her native Brooklyn to attend officer training for Women Accepted for Volunteer Emergency Service (WAVES) at Smith College. During her first assignment in Washington, DC Meg relentlessly decrypts Japanese radio transmissions and daily proves her professional competence while downplaying her male colleagues' personal interests. But when Meg finds herself entangled in a dangerous undercover intelligence operation, she realizes that serving her country requires more than breaking codes.