Stef and Lena take measures to keep Brandon and Callie apart. Meanwhile, Jesus has problems in the wrestling team. Kelsey, Mariana’s friend, reveals a secret of Mariana’s past.
Stef and Lena go on a babymoon, leaving Brandon and Callie in charge of the house. Brandon’s bandmates pressure him into having a few friends over to hear their new sound, but when Mariana and Jesus find out, the night turns into an all-out rager.
Mike invites Brandon to move in with him, which leads to an argument between Stef and Brandon. Meanwhile, Mariana objects to Jesus dating Lexi; and Callie’s journal assignment sparks memories of a dark secret from her past.
Lena wants Mariana’s quinceañera to be perfect, but Mariana uncovers a secret that may ruin her day. Meanwhile, Lena’s mom visits; and Stef reminds Brandon of the dating rules when she observes his and Talya’s friction over Callie.
Frank’s death brings up some painful memories for Callie and Jude. Meanwhile, Jesus and Emma’s relationship grows up, Stef knows about Lena’s secret, and Mike gets in trouble.