A comedic drama exploring accidental paternity, friendship, and the unexpected paths to family.
Story Structure — 4 Plot Phases
The Decision & The Switch
Kassie decides to conceive alone, selects Roland as a donor, and Wally accidentally swaps the sperm sample during a drunken mishap.
Key Events
Kassie's Conception Decision — Kassie decides to have a baby alone despite being single and past her thirties. Characters: Kassie LarsonLocation: New York Apartment
Wally's Objection — Wally objects to Kassie's plan, citing his own neurotic and pessimistic nature. Characters: Kassie Larson, Wally MarsLocation: Apartment
Leonard's Reality Check — Leonard tells Wally he missed his chance when Kassie placed him in the friend zone. Characters: Wally Mars, LeonardLocation: Local Bar
Donor Selection — Kassie selects handsome assistant professor Roland Nilson as her face-to-face sperm donor. Characters: Kassie LarsonLocation: Columbia University
Insemination Party — Wally meets Roland and instantly dislikes him during the home insemination gathering. Characters: Kassie Larson, Wally Mars, RolandLocation: Kassie's Home
The Sperm Switch — Drunk Wally accidentally spills Roland's sample and replaces it with his own. Characters: Wally Mars, RolandLocation: Bathroom
Separation & Time Jump
Kassie moves to Minnesota to raise the child, leaving a heartbroken Wally behind. Seven years later, she returns to New York with her son.
Key Events
The Sperm Switch — Drunk Wally accidentally spills Roland's sample and replaces it with his own. Characters: Wally Mars, RolandLocation: Bathroom
Successful Insemination — The insemination succeeds, and Kassie becomes pregnant without knowing the truth. Characters: Kassie LarsonLocation: Clinic
Departure to Minnesota — Kassie leaves for Minnesota to raise the child, leaving Wally depressed. Characters: Kassie Larson, Wally MarsLocation: New York City
Seven Years Pass — Time jump: Kassie returns to NYC with her precocious six-year-old son Sebastian. Characters: Kassie Larson, SebastianLocation: Minnesota
Reunion with Wally — Kassie reconnects with Wally and eagerly introduces him to Sebastian. Characters: Kassie Larson, Wally Mars, SebastianLocation: New York City
Reunion & Revelation
Wally reconnects with Kassie and bonds with Sebastian. He discovers the truth about the sperm switch and confronts Kassie before Roland's proposal.
Key Events
Reunion with Wally — Kassie reconnects with Wally and eagerly introduces him to Sebastian. Characters: Kassie Larson, Wally Mars, SebastianLocation: New York City
Wally Bonds with Sebastian — Wally and Sebastian quickly form a strong emotional bond despite their age gap. Characters: Wally Mars, SebastianLocation: Park
Roland's Divorce & Dating — Roland is divorced, and Kassie begins dating him, believing he is the father. Characters: Kassie Larson, RolandLocation: New York City
Wally's Realization — Wally notices striking similarities between himself and Sebastian, realizing the truth. Characters: Wally MarsLocation: Wally's Workplace
The Confession — Just before Roland proposes, Wally reveals he is Sebastian's biological father. Characters: Wally Mars, Kassie Larson, RolandLocation: Restaurant
Kassie's Rejection — Shocked and angry, Kassie rejects Wally and ends their immediate interaction. Characters: Kassie Larson, Wally MarsLocation: Street
Reconciliation & Resolution
Kassie realizes her love for Wally and returns to him. They marry and celebrate Sebastian's eighth birthday together.
Key Events
Kassie's Rejection — Shocked and angry, Kassie rejects Wally and ends their immediate interaction. Characters: Kassie Larson, Wally MarsLocation: Street
Wally's Loneliness — Wally endures a period of isolation, missing both Kassie and Sebastian. Characters: Wally MarsLocation: Workplace
Kassie's Return — Kassie finds Wally after work, stating Sebastian needs him and she loves him. Characters: Kassie Larson, Wally MarsLocation: Office Building
Mutual Confession — Both admit they miss and need each other, resolving past tensions. Characters: Kassie Larson, Wally MarsLocation: Street
The Proposal — Wally proposes to Kassie, cementing their relationship and future family. Characters: Wally Mars, Kassie LarsonLocation: Park
Eighth Birthday Party — The film ends with the happily married couple celebrating Sebastian's birthday. Characters: Kassie Larson, Wally Mars, SebastianLocation: Home
Story Breakdown
The Conception Plan — Kassie initiates her journey to motherhood by rejecting traditional dating and selecting a specific donor.
Donor Selection — Kassie chooses Roland over a sperm bank for a face-to-face arrangement.
The Sperm Swap — Wally's drunken mistake accidentally replaces the genetic material with his own.
Seven Years Apart — The passage of time separates the protagonists while raising the stakes for future reunion.
Move to Minnesota — Kassie relocates to raise the child away from New York and Wally.
Raising Sebastian — Kassie navigates single motherhood while Wally remains emotionally stagnant.
The Reunion — Kassie returns to New York, rekindling ties with Wally and introducing Sebastian.
Reconnecting with Wally — Kassie and Wally resume their close friendship after years of separation.
Roland's Return — Roland reenters the picture post-divorce, positioning himself as the father.
The Truth Revealed — Wally uncovers the biological reality and forces a confrontation before the proposal.
Wally's Discovery — Physical similarities trigger Wally's realization of the seven-year-old switch.
Pre-Proposal Confession — Wally interrupts Roland's proposal to reveal his biological paternity.
Emotional Fallout — The revelation fractures relationships, forcing characters to confront their true feelings.
Kassie's Rejection — Kassie reacts with shock and anger, temporarily cutting ties with Wally.
Wally's Isolation — Wally endures loneliness while reflecting on his missed opportunities and love.
Final Reconciliation — Characters overcome past misunderstandings to build a stable, loving family unit.
Mutual Confession — Kassie and Wally openly admit their enduring love and need for each other.
Marriage & Celebration — The couple marries and celebrates Sebastian's birthday, closing the narrative loop.
Kassie is a smart, fun-loving single woman who, despite her neurotic best friend Wally’s objections, decides it’s time to have a baby – even if it means doing it herself… with a little help from a charming sperm donor. But, unbeknownst to her, Kassie’s plans go awry because of a last-minute switch that isn’t discovered until seven years later… when Wally gets acquainted with Kassie’s cute, though slightly neurotic, son.
