Bulder, a wild and funny monster, is playing with his best friend Modika. Their snowball fight is interrupted when quiet Lex invites Modika to study snowflakes. Bulder tries to capture Modikas attention with a well placed snowball which hits Lex squarely on his head, resulting in Modika´s anger and rejection.
Alone, Bulder then discovers a cave with a spectacular secret, but his jealousy drives him to make a mischievous plan to win Modika´s attention back. A plan that he may well come to regret.